Amazon rejects FTC claims over Sponsored Ads pricing and auction mechanics

The Federal Trade Commission has filed a lawsuit alleging Amazon misled advertisers about how its Sponsored Ads are priced and how the auctions work. Amazon says the complaint is misguided and that it does not reflect how advertisers operate or how Sponsored Ads pricing affects consumers and ad customers.

Amazon’s response argues that the FTC’s narrative about consumer harm is unsupported. Amazon says the agency’s complaint cites no evidence of consumer price increases and mentions consumers only a handful of times across more than 150 pages.

On the advertiser side, Amazon says there is no harm in the way advertisers pay for Sponsored Products search ads and in the outcomes they receive. It points to an internal-looking trend it describes from 2019 through 2024, saying the average cost-per-click for Sponsored Products search ads remained flat after adjusting for inflation while conversion rates grew 24% from 2021 to 2025.

Amazon also disputes the FTC’s understanding of advertiser decision-making. The company says advertisers adjust bids based on real-world performance rather than advertising descriptions about auction mechanics. Under that view, Amazon argues advertisers saved more than $8 billion from 2021 to 2025 because Amazon prioritized ad relevancy over selecting ads based on bid price alone.

Amazon further says the FTC mischaracterizes how ads are placed and priced within a generalized second price auction framework. It asserts that, in no scenario does an advertiser pay more than their bid, and that generalized second price auction dynamics are industry standard for decades. It also says only a limited share of placed ads goes to the highest bid, estimating that roughly 92% of ads are not given to the top bid holder.

The company cites additional metrics to support its view that relevancy-focused ranking produces higher sales and returns than a pure highest-bid approach. Amazon says it estimates that in 2026 advertisers will deliver at least 58% higher sales and at least 46% better return on ad spend if ads are prioritized based on relevancy rather than simply highest bid amount. Amazon also says shoppers are 58% more likely to see ads for products they would consider clicking on or purchasing when relevancy is prioritized.

Amazon’s response also addresses how the case was built. It says the FTC relied on a small set of simplified communications after reviewing about 1.5 million pages covering six years, and it calls the alleged “companywide” deception assertion false.

Sector context matters because Sponsored Ads are a major part of Amazon’s advertising business, which sits at the intersection of retail traffic and adtech. In practice, the core question for regulators is whether auction design and ranking rules are explained in a way that does not mislead advertisers about pricing and placement. Amazon’s counter is that the ranking model, backed by performance outcomes, should be judged by results rather than by simplified descriptions of auction mechanics.

A caveat is that Amazon’s statement is a defense position, not an adjudication. The company does not dispute that the FTC has challenged its Sponsored Ads messaging and auction operation, and it does not provide detailed, case-specific documentary evidence in its response beyond the metrics and characterizations of the complaint’s assertions. The FTC has not been described in the release as offering evidence of consumer price increases within the complaint itself, but whether a court finds the regulator’s allegations credible will depend on the full evidentiary record.

Next, the parties are likely to litigate whether Amazon’s communications about auction dynamics and pricing were misleading, and whether any such misrepresentation caused advertiser or consumer harm. Observers will also watch how the court handles the competing interpretations of second-price auction mechanics and ad ranking, and whether the outcome turns on technical auction explanations, advertising disclosures, or the observed performance trends cited by Amazon.