11 Best Ecommerce Advertising Companies in the US (2026)

TL;DR

The best ecommerce advertising companies connect ad spend to profit, not just platform ROAS. This guide compares 11 agencies across Amazon, Shopify, Google Ads, and Meta with real pricing, verified reviews, and honest tradeoffs. EZCommerce leads the list for SMB and mid-market brands that need unified Amazon and D2C growth under one profit-first plan. If your ad costs keep climbing but contribution margin keeps shrinking, the issue is probably your agency model.

Why This Comparison Exists

U.S. retail ecommerce sales hit $326.7 billion in Q1 2026, up 9.8% year over year, while total retail grew just 3.9%. Digital advertising revenue reached $294.6 billion in 2025. Retail media spending alone is projected to reach $69.33 billion this year.

More sales are moving online. But more brands are also competing for the same clicks in increasingly expensive auctions. Choosing the right ecommerce advertising company is no longer about finding someone to “run ads.” It is about finding a partner who can tie media buying to product feeds, listing quality, inventory depth, tracking integrity, and actual profit.

Most agency listicles rank companies by awards or self-reported achievements. That is not useful for a buyer deciding between an Amazon PPC specialist, a Shopify growth agency, and a full-service performance team. The better approach: choose by bottleneck, not brand name. If your Amazon organic rank is collapsing, a Meta creative agency will not fix it. If your Shopify checkout leaks revenue, a Google Ads specialist will just send more traffic into a broken funnel.

Start with a free brand audit to identify where your growth is actually stuck before comparing agencies.

At-a-Glance Comparison

Company	Best For	Core Channels	Starting Price	Review Signal	Key Tradeoff
EZCommerce	Unified Amazon + D2C growth	Amazon PPC, Google, Meta, Shopify/Woo, CRO	From $499/mo	Site testimonials	Fewer public case studies
Tinuiti	Enterprise omnichannel, retail media	Google, Amazon, retail media, paid social	$10,000+ min project	Clutch: 5.0 (1 review)	Too large for most SMBs
Acadia	Mid-market retail/CPG, Amazon	Amazon, Google, YouTube, SEO	$5,000+ min project	Clutch: 4.8 (27 reviews)	Clients wanted more proactive guidance
Canopy Management	Amazon-first PPC + listings	Amazon PPC, marketplace strategy	$1,000+ min project	Clutch: 4.9 (35 reviews)	Reporting clarity issues
Nuanced Media	Established Amazon brands	Amazon Ads, DSP, catalog ops	$5,000+ min project	Clutch: 4.9 (29 reviews)	Best for $100K+ Amazon revenue
Lilo Social	DTC paid social + creative	Meta, Google, email/SMS, creator content	$5,000+ min project	Clutch: 4.9 (44 reviews)	Creative alignment improvable
Common Thread Collective	DTC CPG profit modeling	Paid social, paid search, CRO, video	$5,000+ min project	Clutch: 4.1 (17 reviews)	Mixed sentiment; needs clear goals
KlientBoost	PPC + CRO testing	Google Ads, paid social, CRO	$1,000+ min project	Clutch: 4.9 (403 reviews)	Not ecommerce-only
Disruptive Advertising	Broad PPC, large review base	PPC, SEO, paid social	$5,000+ min project	Clutch: 4.8 (367 reviews)	Ecommerce is partial practice
Front Row Group	Beauty/health/wellness brands	PPC, commerce growth, Google	$10,000+ min project	Clutch: 4.9 (36 reviews)	Higher budget fit
My Amazon Guy	Large Amazon ops team	Amazon catalog, SEO, advertising	$1,000+ min project	Trustpilot: 4.5 (482 reviews)	Polarized sentiment

How We Evaluated These Ecommerce Advertising Companies

Most competing lists rank agencies by partner status, visibility, or self-reported awards. One popular ranking page weights AI visibility at 60% of its scoring methodology, which is interesting for SEO research but tells you almost nothing about whether the agency can manage your ad spend profitably.

We focused on criteria that matter to the buyer:

• Ecommerce specialization. Is ecommerce the primary practice, or a side offering?
• Channel depth. Can the agency handle Amazon, Google, Meta, and marketplace operations, or just one channel?
• Pricing transparency. Are retainer models, starting prices, and scope inclusions clearly stated?
• Verified sentiment. What do Clutch reviews, Trustpilot ratings, and practitioner discussions on Reddit actually say?
• Profit sophistication. Does the agency report contribution margin, TACOS and profitability, MER, and LTV/CAC, or just platform ROAS?
• Operational fit. Does the agency handle inventory, listings, tracking, and compliance alongside media buying?

Practitioners on LinkedIn have been making the case that ROAS and ACOS alone are not enough. One practitioner demonstrated how a 15% TACOS can still lose money when product economics are weak because contribution margin per order turned out negative despite a seemingly healthy ratio. Another showed an Amazon account with $180K per month in revenue where ACOS looked fine at 24%, but TACOS had quietly risen from 9% to 17% because paid sales were cannibalizing organic. These real-world examples underscore why the ecommerce advertising agencies on this list were evaluated on profit sophistication, not just platform metrics.

The 11 Best Ecommerce Advertising Companies

1. EZCommerce

Best for: SMB and mid-market brands that need Amazon and D2C advertising managed under one profit-first operating plan.

EZCommerce is a California-based ecommerce growth agency that treats Amazon and D2C as a single system instead of separate channel silos. Ad buying is connected to catalog health, inventory depth, compliance, CRO, and analytics, all governed through 90-day plans with weekly reporting.

Pricing:

• Amazon EzAds: from $499/month
• Amazon EzScale: from $1,999/month per Amazon account
• D2C EzAds: from $999/month
• D2C EzScale: from $1,999/month
• Free Brand Audit available (30 to 45 minute call, scorecard, quick wins, and 90-day action plan delivered in about 5 to 7 business days)

Key features:

• Intent-based Amazon campaign architecture: brand defense, competitor exact, category, and discovery segments
• TACOS and contribution margin planning across campaigns
• Sponsored Products, Sponsored Brands, Sponsored Display, DSP, and AMC strategy
• Listing optimization, A+ Content, Brand Store, imagery
• Inventory depth planning, restock schedules, FBA fee audits, aged inventory alerts
• Account health monitoring, suppression resolution, case escalations
• EzGuard program for IP enforcement, reimbursements, and chargebacks
• Google and Meta ads for D2C with GA4, GTM, and CAPI setup
• CRO Suite: PDP testing, checkout optimization, upsells, bundles, UX speed
• Shopify and WooCommerce builds

See full scope on Amazon management services and D2C growth services.

Tradeoffs:

• Fewer public case studies than enterprise-scale agencies
• Boutique scale compared with large networks like Tinuiti or Acadia
• Strongest fit is Amazon plus core D2C stack; brands needing heavy global retail media or large in-house creative studios may need a bigger network
• No independent Reddit or forum discussions about EZCommerce were found during research

User perspective: EZCommerce publishes site-hosted testimonials from brands including Tayfus, Garisar, VRD Socks, and W Kitchen & Bath. The company also documents operational expertise on its blog, including a detailed walkthrough of reversing a $1,200 Amazon Buy Shipping adjustment. Independent third-party reviews on Clutch or Trustpilot were not found, which buyers who rely on those platforms should note.

2. Tinuiti

Best for: Enterprise ecommerce brands with complex omnichannel, retail media, and marketplace needs.

Tinuiti is one of the largest independent performance marketing agencies in the U.S. It covers Google, Amazon, retail media, streaming, and paid social at enterprise scale, making it a strong fit for large organizations with multi-channel complexity.

Pricing:

• Minimum project size: $10,000+ (per Clutch)
• Average hourly rate: $100 to $149

Key features:

• Paid search and product listing management
• Retail media buying across Amazon, Walmart, and other platforms
• Conversion rate optimization and remarketing
• SEO, email, and video marketing
• Streaming and connected TV capabilities

Tradeoffs:

• Likely too large and expensive for most SMBs or early-stage sellers
• Only 1 public Clutch review at time of research, limiting independent validation
• Overbuilt for brands that only need Amazon PPC or Shopify-focused Meta ads

User perspective: The one verified Clutch reviewer, a clothing retailer, reported ROAS improved from under 1 to around 4 and described a Google Ads campaign scaling from 8 to 800 keywords under Tinuiti’s management.

3. Acadia

Best for: Mid-market retail and CPG brands that need Amazon advertising plus retail media and content execution.

Acadia focuses heavily on Amazon, with 65% of its PPC work directed at Amazon Advertising per its Clutch profile. It also covers Google Ads, YouTube, SEO, social, and content.

Pricing:

• Minimum project size: $5,000+
• Average hourly rate: $100 to $149
• Monthly costs typically $2,250 to $5,000 depending on scope
• Most common project size: $10,000 to $49,999

Key features:

• Amazon Advertising including DSP, Display, Sponsored Products, and Sponsored Brands
• Google Ads and YouTube advertising
• SEO and content marketing
• Market research and video production

Tradeoffs:

• Some clients noted Acadia could be more proactive about suggesting growth opportunities
• Less clearly positioned for very small brands or pre-revenue sellers
• Stronger on Amazon and retail channels than DTC paid social or creative testing

User perspective: A verified Clutch review from Tommy John reported 60% Amazon business growth over 1.5 years, citing funnel advertising touchpoints including Display and DSP as key contributors.

4. Canopy Management

Best for: Amazon-first sellers wanting PPC optimization with listing and marketplace support.

Canopy is an Amazon-focused ecommerce advertising agency that positions itself around Sponsored Products, Sponsored Brands, DSP, and broader marketplace growth strategy.

Pricing:

• Minimum project size: $1,000+
• Average hourly rate: $150 to $199
• Most common project size: $10,000 to $49,999

Canopy’s own Amazon agency guide provides useful industry context: many Amazon PPC agencies charge 10 to 20% of ad spend with flat retainers from about $2,000 to $25,000 per month.

Key features:

• Amazon PPC campaign management and optimization
• Listing improvement and product content
• Marketplace growth strategy
• Claims additional capability for Walmart, TikTok Shop, Shopify, Meta, and Google

Tradeoffs:

• Some clients wanted clearer dashboards with fewer unexplained acronyms
• Heavily Amazon-centered, which limits D2C or Google Shopping depth
• Trustpilot sentiment is mixed enough that buyers should read individual reviews rather than relying on the star rating alone

User perspective: A verified Clutch reviewer (cleaning products manufacturer) said Canopy boosted sales month over month for six consecutive months and improved product listings.

5. Nuanced Media

Best for: Established Amazon brands (typically $100K+ in revenue) that want intelligence-led strategy and catalog operations.

Nuanced Media is 100% focused on Amazon Advertising per its Clutch profile, combining PPC management with business consulting, competitive intelligence, and account operations.

Pricing:

• Minimum project size: $5,000+
• Average hourly rate: $100 to $149

Key features:

• Amazon Advertising strategy and PPC management
• DSP and advanced campaign types
• Catalog and account operations
• Business consulting and strategic roadmaps

Tradeoffs:

• Best fit skews toward established brands; very small or new sellers may not be ideal
• Some clients wanted more proactive strategy suggestions
• Amazon-only focus means it is not the right choice if the main problem is Shopify CRO or Meta creative fatigue

User perspective: A chocolate company reviewing Nuanced on Clutch reported TACOS improving from 112 to 44 in four months, moving toward a goal of 20. A smartwatch brand reported sales increasing tenfold after Nuanced’s Amazon advertising work.

6. Lilo Social

Best for: DTC brands (especially beauty and skincare) that need paid social, Google and Meta, email/SMS, and creator content.

Lilo Social is a full-funnel ecommerce marketing agency specializing in paid search and social, creative production, landing pages, and email/SMS for direct-to-consumer brands.

Pricing:

• Minimum project size: $5,000+
• Average hourly rate: $100 to $149
• Most common project size: $50,000 to $199,999 (primarily retainer-based)

Key features:

• Meta Ads and Google Ads management
• Creator content facilitation for paid media and email
• Email and SMS marketing
• Landing page strategy and execution

Tradeoffs:

• Creative outputs and brand-standard alignment were noted as areas for improvement in Clutch reviews
• Stronger for DTC and creative than Amazon operational work
• Retainer costs can be substantial relative to early-stage brand budgets

User perspective: A NuFACE ecommerce manager reviewed Lilo on Clutch, praising weekly reporting, responsiveness to small questions, and effective management of Google and Meta campaigns. Another reviewer reported CPA reduced by half.

7. Common Thread Collective

Best for: DTC CPG brands that want customer acquisition tied to contribution margin, LTV forecasting, and unit economics.

Common Thread Collective (CTC) is positioned around profitability metrics rather than raw revenue or ROAS. It emphasizes contribution margin modeling, creative production, and paid media execution for DTC brands.

Pricing:

• Minimum project size: $5,000+
• Average hourly rate: $150 to $199
• Client investments range from $15,000 to over $350,000

Key features:

• Paid social and paid search management
• Creative production and video
• CRO and conversion optimization
• LTV forecasting and profitability modeling

Tradeoffs:

• Clutch reviews show mixed value sentiment; some clients report strong ROI while others cite communication and performance issues
• Works best when the brand arrives with clear goals and a current-state understanding of its numbers
• Less Amazon-focused than marketplace specialists on this list

User perspective: A fashion brand on Clutch said CTC managed SMS, email, Facebook, Google Shopping, and social ads, keeping the brand above 3.5x ROAS throughout the engagement and providing weekly ad creative.

8. KlientBoost

Best for: Brands wanting structured PPC with CRO, landing page testing, and disciplined experimentation.

KlientBoost is a PPC-focused agency that pairs Google Ads and paid social with conversion rate optimization and landing page testing. It has the largest Clutch review base on this list by a wide margin.

Pricing:

• Minimum project size: $1,000+
• Average hourly rate: $100 to $149
• Most common project size: $10,000 to $49,999

Key features:

• Google Ads management including Performance Max campaigns for ecommerce
• Paid social management (Facebook, LinkedIn)
• CRO and landing page optimization
• Amazon Advertising capability (though not primary focus)

Tradeoffs:

• Not ecommerce-only; ecommerce represents about 10% of industries served per Clutch
• Some clients noted onboarding and strategy-execution challenges
• If the brand needs Amazon account health, FBA reimbursements, or inventory planning, a marketplace-specific agency will be a better fit

User perspective: One Clutch reviewer described the relationship as “collaborative rather than call and response,” but also asked for more innovative test ideas because some experiments, while effective, felt basic.

9. Disruptive Advertising

Best for: Brands wanting a larger PPC agency with broad service coverage and extensive review history.

Disruptive Advertising is a broadly focused performance marketing company with one of the largest verified review bases in the ecommerce advertising space.

Pricing:

• Minimum project size: $5,000+
• Average hourly rate: $150 to $199
• Most common project size: $10,000 to $49,999

Key features:

• PPC management across Google, Amazon (15% of PPC focus), and Bing
• SEO and content marketing
• Paid social and email marketing
• Performance marketing and digital strategy

Tradeoffs:

• Broad agency model may not provide deep ecommerce specialization
• Clutch reviews cite onboarding challenges in some cases
• One verified ecommerce Clutch review rated the company 1.5 out of 5, citing unclear data, poor process transparency, and disappointing expertise

User perspective: With 367 Clutch reviews, the overall signal is positive (4.8 rating). But the negative ecommerce-specific review is a useful reminder: always request ecommerce-specific case studies and meet the actual account team before signing.

10. Front Row Group

Best for: Mid-market and larger consumer brands in beauty, health, wellness, and lifestyle that need commerce acceleration.

Front Row Group positions itself as a commerce accelerator for consumer brands rather than a narrow PPC shop, with particular strength in beauty, health, and wellness verticals.

Pricing:

• Minimum project size: $10,000+
• Hourly rate: undisclosed
• Most common project size: $50,000 to $199,999

Key features:

• PPC management (85% of services, heavily Google-focused)
• Commerce growth and ecommerce management
• Digital marketing and business intelligence
• Branding, design, and omnichannel support

Tradeoffs:

• Pricing is less transparent because hourly rate is undisclosed
• More likely a fit for established brands than early-stage sellers
• If the primary pain is Amazon listing suppression, FBA reimbursements, or Seller Central operations, a more Amazon-specialized firm is probably a better first call

User perspective: Clutch reviewers (4.9 from 36 reviews) consistently cite strong value for cost, quality communication, and improved marketing outcomes.

11. My Amazon Guy

Best for: Amazon sellers wanting a large Amazon-focused operations team for catalog, SEO, advertising, and marketplace management.

My Amazon Guy is a large Amazon operations agency with 250 to 999 employees. It handles advertising alongside catalog optimization, Amazon SEO, and full-service marketplace management.

Pricing:

• Minimum project size: $1,000+
• Average hourly rate: $100 to $149

Key features:

• Amazon advertising and PPC management
• Catalog optimization and Amazon SEO
• Full-service marketplace operations
• Claims $1.2B in managed Amazon revenue (vendor claim, not independently verified)

Tradeoffs:

• Sentiment is more polarized than most alternatives; Trustpilot shows 87% five-star but 9% one-star reviews
• No Clutch reviews were visible on the opened profile
• With a team this large, buyers should ask exactly who manages their account, who handles strategy, and who does the day-to-day work

User perspective: Trustpilot shows 4.5 from 482 reviews. Many reviewers praise professional, knowledgeable staff and proactive problem solving. Dissatisfied customers describe full-service management as below expectations. One March 2026 negative review alleged listing errors, misapplied coupons, minimal PPC management, increased ACOS, and declining sales.

How Much Do Ecommerce Advertising Companies Cost?

Pricing is one of the most poorly covered topics across existing agency lists. Here is what the data shows.

General ecommerce marketing retainers often range from $3,000 to $20,000+ per month for multi-channel growth. PPC and paid social management typically runs 10 to 20% of ad spend with $2,000 to $5,000 monthly minimums. CRO can run $2,000 to $12,000 per month with tools extra. Creative production packages often land between $2,000 and $8,000 per project. These ranges come from Clutch ecommerce marketing data.

Agency fees are only one part of your true customer acquisition cost. Shopify’s 2026 acquisition guide notes that CAC should include ad spend, creative production, agency fees, creator fees, software, and internal team time. The average ecommerce CAC was $41.83 as of April 2026.

A key point most ecommerce advertising companies will not volunteer: the cheapest retainer can be the most expensive mistake if it wastes ad spend, and a higher-priced agency can still be worthwhile if it improves contribution margin. Always compare total cost against profit impact, not just the monthly invoice.

EZCommerce is unusually transparent here. Amazon EzAds starts at $499 per month and D2C EzAds starts at $999 per month, with EzScale tiers at $1,999 per month. That pricing sits well below the $3,000 to $5,000 minimums that most competitors on this list require.

Choose Your Ecommerce Advertising Agency by Bottleneck

The biggest mistake brands make when evaluating ecommerce marketing agencies is picking the most famous name instead of the one that solves their actual problem.

If Amazon profitability is the bottleneck: Choose an agency that can show ASIN-level TACOS, contribution margin reporting, intent-based campaign architecture, and inventory-aware ad scaling. Strongest fits: EZCommerce, Canopy, Nuanced, My Amazon Guy, Acadia.

If Shopify paid acquisition is the bottleneck: Choose an agency that handles Google Merchant Center feed quality, Performance Max segmentation, Meta creative testing, CAPI and GA4 event integrity, and checkout CRO. Strongest fits: EZCommerce, Lilo Social, KlientBoost, Common Thread Collective.

If CRO is the bottleneck: Better traffic into a weak product page or broken checkout does not solve the real problem. Focus on checkout conversion rates before scaling spend. Strongest fits: EZCommerce, KlientBoost, Common Thread Collective.

If creative fatigue is the bottleneck: Choose an agency that produces and tests creative at volume, not one that just runs traffic against stale assets. Strongest fits: Lilo Social, Common Thread Collective.

If enterprise retail media is the bottleneck: Choose an agency with marketplace, measurement, and cross-channel infrastructure at scale. Strongest fits: Tinuiti, Acadia, Front Row Group.

Red Flags When Hiring an Ecommerce Advertising Company

Practitioners on Reddit are blunt about agency failures. A seller on r/FulfillmentByAmazon described working with four Amazon PPC agencies and seeing the same pattern each time: strong upfront strategy, little real change after onboarding, campaigns scaled back to make metrics look good, and the account quietly handed to a lower-attention manager overseas.

Another thread warned against “set and forget” PPC, black-box campaign pitches, and agencies that overpromise fast wins without understanding brand-building inside Amazon. The commenter recommended asking who actually manages the account, whether the team is in-house, and whether recent case studies exist.

Watch for these warning signs:

1. They talk about ROAS but cannot explain contribution margin or TACOS
2. They will not show you the campaign structure or search term reports
3. They do not ask about your COGS, platform fees, inventory levels, or stockouts
4. They promise fast Amazon ranking wins without explaining the mechanics
5. The senior strategist disappears after the sales call
6. They report platform conversions without reconciling against backend orders
7. They do not clarify what is included in the retainer versus billed separately
8. They cannot produce recent case studies from brands of similar size and category
9. They treat ads as isolated from listings, feeds, tracking, and checkout quality
10. Creative testing is an afterthought, not a repeatable system

A separate Reddit discussion in r/Amazonsellercentral reinforced a related point: poor agencies “just wanted to run PPC,” while the better experience came from a team that handled listings, ads, and inventory planning together. The seller said organic rankings moved after being stuck for months.

Questions to Ask Before Signing

On strategy and profit:

• How do you decide whether to optimize for ROAS, ACOS, TACOS, MER, contribution margin, or LTV/CAC?
• How do you prove ads are growing the business rather than replacing organic sales?
• How do you separate new customer acquisition from returning customer revenue?

On Amazon:

• Walk me through your campaign architecture for brand defense, competitor terms, category terms, and discovery.
• How do you coordinate ad spend with inventory depth, FBA restocks, and Featured Offer eligibility?
• Can you show ASIN-level TACOS formulas and benchmarks?

On Google and Meta:

• How do you structure Performance Max by margin tiers and product groups?
• How do you handle Conversions API setup and event deduplication?
• What do you report besides platform ROAS?

On operations:

• Who will manage the account after onboarding? Is the team in-house, freelance, offshore, or mixed?
• How many accounts does the strategist manage?
• Do we own our ad accounts, analytics, dashboards, creative files, and naming conventions?

A good ecommerce advertising company will answer all of these without hesitation. If you get vague responses or hear “we handle everything,” keep looking.

Final Recommendation

For brands that need a single partner to manage Amazon PPC, Google and Meta ads, Shopify or WooCommerce, CRO, analytics, inventory coordination, and compliance, EZCommerce is the strongest starting point on this list. It combines operational depth with accessible pricing (starting at $499 per month for Amazon EzAds) and profit-first planning tied to TACOS, contribution margin, and LTV/CAC.

Larger enterprise brands with retail media complexity should explore Tinuiti, Acadia, or Front Row Group. Amazon-only sellers who want marketplace specialists can consider Canopy, Nuanced, or My Amazon Guy. DTC brands focused on paid social and creative should look at Lilo Social or Common Thread Collective.

Whatever you choose, start by understanding your own numbers. Know your COGS, your fees, your margins, and your target CAC before you talk to any agency.

Get in touch or request a free brand audit to compare what an agency proposes against what you actually need.

Frequently Asked Questions

What does an ecommerce advertising company do?

Ecommerce advertising companies manage paid channels like Amazon Ads, Google Ads, Meta Ads, and retail media for online brands. The strongest ones also handle product feed management, creative testing, tracking setup (GA4, GTM, CAPI), landing page optimization, and profit reporting. Some full-service agencies extend into marketplace operations, inventory planning, and compliance.

How much do ecommerce advertising companies charge?

Most charge a monthly retainer ($3,000 to $20,000+ for multi-channel), a percentage of ad spend (10 to 20%), or a hybrid. Amazon PPC agencies often charge $2,000 to $25,000 per month in flat retainers or 10 to 20% of spend. EZCommerce starts lower than most, with Amazon EzAds from $499 per month and D2C EzAds from $999 per month.

What is the best ecommerce advertising company for Amazon sellers?

It depends on your size and needs. For unified Amazon and D2C growth with profit-first planning, EZCommerce is the top recommendation. For Amazon-only sellers, Canopy Management, Nuanced Media, and My Amazon Guy are strong alternatives, each with different tradeoffs around pricing, team size, and reporting depth.

What is the best ecommerce advertising agency for Shopify brands?

For Shopify brands that also need Google Ads, Meta Ads, CRO, and tracking setup, EZCommerce is a strong option. Lilo Social fits brands that prioritize creative and paid social. Common Thread Collective works well for DTC CPG brands that want financial modeling alongside acquisition. KlientBoost is worth considering for structured PPC plus landing page testing.

Should I hire an agency or a freelancer for ecommerce ads?

Freelancers can work well for narrow problems or smaller budgets. One Reddit seller chose a freelancer over a larger Amazon agency specifically because they expected more attentive service at their spend level. Agencies are stronger when growth depends on cross-functional execution across ads, creative, tracking, CRO, inventory, and marketplace operations. The deciding factor is complexity, not prestige.

What metrics should ecommerce advertising companies report?

Beyond ROAS and ACOS, look for TACOS (total advertising cost of sale), MER (marketing efficiency ratio), CAC, LTV, contribution margin, new versus returning customer revenue, organic rank changes, inventory status, and backend revenue reconciliation. If an agency only reports platform ROAS, it cannot tell you whether your business is actually profitable.

When should I not hire an ecommerce advertising agency?

Do not hire if you cannot define your margins, COGS, platform fees, and target CAC. Do not hire a high-retainer agency if monthly ad spend is too low to produce meaningful test data. Do not hire before fixing obvious listing, feed, tracking, or checkout problems. And never sign with any agency that refuses to let you meet the person actually managing your account.