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Marketplace & retail media agencies, reviewed and ranked

Amazon, Walmart and retail media networks. Scored on contribution margin and TACoS rather than ROAS, which hides the economics that matter here.

13 evaluated.

ROAS is the wrong number on a marketplace

Marketplace economics are decided by contribution margin after fees, storage, returns and cost of goods — none of which appear in ROAS. The measures this rubric rewards are profitable revenue, TACoS, new-to-brand and organic halo. An agency reporting ROAS alone can grow your sales and shrink your profit, and both of you will be surprised.

Half the job is the listing, not the ads

Titles, bullets, imagery, video, A+ content and storefronts decide whether the traffic converts, and paid spend against a weak listing is a subsidy to the platform. Ask who owns the catalog work — agencies that only touch the ad console are working on the smaller lever.

Ask which networks, specifically

Sponsored Products, Sponsored Brands, Display, DSP, AMC, Walmart Connect and Instacart are genuinely different systems with different economics. Depth in the two or three that matter to you beats nominal coverage of all of them.

Evaluated

Marketplace / Retail Media13 evaluated

Envision HorizonsStrong fit
Marketplace / Retail Media · 4.76/5
A focused Amazon, Walmart, and Target growth agency with verified revenue, organic-share, catalog, advertising, creative, forecasting, and operational evidence.
BellaVixStrong fit
Marketplace / Retail Media · 4.61/5
A marketplace-management specialist with 32 Clutch reviews and focused Amazon, Walmart, and Target advertising, catalog, content, and operational capability.
Trivium GroupStrong fit
Marketplace / Retail Media · 4.47/5
An Amazon specialist with 41 Clutch reviews, daily account management, listing and shop-health capability, and client-reported revenue, profit, and month-over-month sales growth.
Blue WheelStrong fit
Marketplace / Retail Media · 4.46/5
An ecommerce agency connecting marketplace management, retail media, catalog, operations, inventory, and performance advertising with a substantial public case library.
Front RowStrong fit
Marketplace / Retail Media · 4.46/5
A global commerce partner with integrated Amazon marketplace growth, retail media, content, education, and DTC capability backed by named brand cases.
TinuitiStrong fit
Marketplace / Retail Media · 4.43/5
A large omnichannel retail-media agency with deep Amazon Ads and AMC capability plus platform-published cases tying work to new-to-brand sales, awareness lift, branded search, and total marketplace sales.
Sequence CommerceStrong fit
Marketplace / Retail Media · 4.43/5
An Amazon-focused growth agency with 65 Clutch reviews, listing and SEO depth, transparent reporting, and recent client-reported gains in sales share, ACoS, TACoS, rankings, and organic contribution.
AcadiaStrong fit
Marketplace / Retail Media · 4.35/5
A retail-media specialist with Amazon-published evidence that it moved a challenger brand's new-to-brand share from 25% to 78% using DSP audience and creative strategy.
Nuanced MediaStrong fit
Marketplace / Retail Media · 4.23/5
An Amazon-focused agency with listing, account-history, and marketplace strategy depth plus unusually visible content pricing, though independent review corroboration is thinner than at the leaders.
SitrunaStrong fit
Marketplace / Retail Media · 3.8/5
An Amazon marketplace operator with launch, inventory-aware performance monitoring, and market-expansion case work, but limited public pricing and thinner independent proof.
eAccountableStrong fit
Marketplace / Retail Media · 3.76/5
A performance agency with established Amazon and marketplace work, Walmart audit capability, and 23 Clutch reviews, but less public detail on incrementality and operational ownership.
TeikametricsConditional
Marketplace / Retail Media · 3.42/5
A well-reviewed marketplace optimization platform with optional analysts and managed services, but software—not accountable full-service operations—is the core product.
Seller InteractiveConditional
Marketplace / Retail Media · 2.54/5
A real Amazon and Walmart agency with strong claimed scope, but a 44% one-star Trustpilot share and repeated account-health and delivery complaints make the downside unacceptable.
How this page is built: every vendor here is scored against the published marketplace_retail_media rubric — the one written for what this category actually sells, not a general agency rubric. Several of these records were first filed elsewhere and scored against a rubric they were not competing in; where that happened, the record carries a rescored_from field showing the previous verdict and score, so the change is auditable rather than silent.