Amazon sued by FTC and 17 states over allegations it inflates online prices and overcharges sellers

U.S. regulators and 17 states are suing Amazon over allegations the e-commerce behemoth abuses its position in the marketplace to inflate prices on and off its platform, overcharge sellers and stifle competition.

The lawsuit, filed Tuesday in federal court in Amazon’s home state of Washington, is the result of a yearslong investigation into the company’s businesses and one of the most significant legal challenges brought against it in its nearly 30-year history.

The Federal Trade Commission and states that joined the lawsuit allege Amazon is violating federal and state antitrust laws. They are asking the court to issue a permanent injunction that they say would prohibit Amazon from engaging in its unlawful conduct and loosen its “monopolistic control to restore competition.”

The complaint accuses the company of engaging in anti-competitive practices through measures that deter sellers from offering lower prices for products on non-Amazon sites, an argument mirroring allegations made in a separate lawsuit filed last year by the state of California.

The lawsuit says Amazon buries listings offered at lower prices on other sites. At the same time, it also charges sellers high fees, forcing merchants to raise their prices on the platform, as well as on other e-commerce sites in order to keep their products competitive on Amazon.

“The complaint sets forth detailed allegations noting how Amazon is now exploiting its monopoly power to enrich itself while raising prices and degrading service for the tens of millions of American families who shop on its platform and the hundreds of thousands of businesses that rely on Amazon to reach them,” FTC Chairman Lina Khan said in a prepared statement.

Seattle-based Amazon.com Inc. said