Key Points:
- The Federal Trade Commission and more than 20 state attorneys general are preparing a major lawsuit against Amazon over deceptive ad pricing practices.
- Regulators allege Amazon ran a covert scheme over a seven-year period that artificially inflated pay-per-click advertising costs for merchants.
- The company allegedly deployed a secret “soft reserve” bidding system in 70% to 80% of auctions, raising ad rates by up to 50% on peak shopping days.
- Amazon generated $68 billion in digital advertising revenue in 2025, making the ad division one of its most profitable business units.
The Federal Trade Commission is preparing to file a major lawsuit against Amazon in a Seattle federal court, accusing the e-commerce giant of systematically manipulating advertising auction prices on its retail platform. A bipartisan coalition of more than 20 state attorneys general, including top law enforcement officials from New York, California, and Florida, plans to join the federal case. Following reports of the impending legal action, Amazon shares fell 2.8% as investors weighed the financial and operational fallout for the company’s highest-margin division.
The lawsuit centers on claims that Amazon deceived thousands of third-party merchants and brand advertisers over a seven-year window beginning in 2018. According to regulatory findings, the retail giant quietly altered the underlying mechanics of its ad auction engine to extract higher fees from sellers bidding for top search visibility. Merchants rely heavily on these sponsored product placements to reach shoppers, and the covert pricing changes forced businesses to spend billions of dollars in extra advertising expenses to maintain their sales volume.
At the core of the alleged scheme is a secret pricing tactic known internally as a “soft reserve.” In standard second-price auctions, the winning bidder pays a fraction above the second-highest bid submitted by a competitor. However, regulators found that Amazon used its insider access to competing merchant bids to enter its own automated shadow bids. By secretly bidding against its own platform sellers, Amazon pushed clearing prices higher than the runner-up bid, pocketing the resulting surcharge without informing the participating merchants.
The company allegedly timed these artificial price hikes to coincide with high-traffic promotional holidays, including Black Friday, Cyber Monday, and Prime Day events. By activating shadow bidding during peak consumer buying sprees, Amazon led merchants to believe that skyrocketing ad costs resulted from organic holiday competition among rival brands. Internal company records reveal that advertising executives closely tracked the extra revenue generated by this pricing strategy while intentionally limiting outside awareness of the auction adjustments.
Over time, Amazon expanded the practice from occasional peak shopping days into everyday marketplace operations. Regulators found that the platform intervened in 70% to 80% of search ad auctions in recent years. This systematic intervention increased pay-per-click costs by up to 50% during major promotional sales. Because advertising has become virtually mandatory for merchants seeking visibility among millions of product listings, sellers have had little choice but to absorb the escalating auction costs.
The legal challenge strikes directly at Amazon’s core profit engine. Amazon operates the world’s third-largest digital advertising platform, trailing only Alphabet and Meta Platforms. In 2025, the company generated $68 billion in advertising revenue, representing one of its fastest-expanding and most lucrative revenue channels. Unlike retail merchandise sales, which carry thin margins and heavy warehouse logistics overhead, digital advertising delivers high gross margins that heavily subsidize other operational divisions across the company.
The economic harm from the alleged price inflation extended beyond merchants to everyday retail consumers. As independent sellers saw their digital advertising expenses surge, many raised retail prices on goods across the platform to protect their operating margins. Regulators argue that Amazon’s deceptive auction practices created an artificial price floor across multiple consumer product categories, driving up the cost of household goods, apparel, and electronics for millions of online shoppers.
The coalition of state attorneys general joining the FTC brings substantial legal leverage to the lawsuit. While federal consumer protection claims focus on halting unlawful practices, state unfair-competition laws allow state officials to pursue severe civil penalties and seek restitution for affected businesses located within their borders. A coordinated state and federal enforcement action significantly increases Amazon’s financial exposure and could lead to multi-billion-dollar damages claims alongside court-mandated overhauls of its ad auction algorithms.
This latest case marks the third major federal regulatory action targeting Amazon’s business operations in recent years. The company previously agreed to a $2.5 billion settlement with the FTC over deceptive subscription enrollment and cancellation practices for its Prime membership program, paying $1.5 billion in customer refunds and a $1 billion civil penalty. Amazon is also defending itself against a separate, broad antitrust lawsuit alleging that the company maintains an illegal retail monopoly by penalizing merchants who offer lower prices on competing platforms.
The outcome of the litigation could reshape the broader digital marketing landscape and set strict transparency standards for retail media networks. As major retailers build out their own automated advertising exchanges, regulators are signaling that algorithmic bid manipulation and undisclosed pricing floors violate federal trade laws. The lawsuit will force Amazon to defend its auction mechanics in open court, potentially opening its proprietary pricing algorithms to external scrutiny and restoring competitive bidding transparency for online sellers.
