E-commerce giant eBay Inc. is the latest retailer to face allegations of price gouging high-demand products during the COVID-19 pandemic.

On Monday, a class action alleged that eBay, despite vowing to curb price gouging on its site, continues to encourage the practice by charging a “final value fee” based on the price of the product sold. Jeanette Mercado, a California driver for Lyft and Uber who bought a two-pack of N95 masks on eBay for $23.98, with the same product selling at other national retailers for no more than $8.99, filed the suit in federal court in the Northern District of California.