Meta has launched a dedicated Seller app for Facebook Marketplace, aimed at professional sellers. The app focuses on enhanced seller tools and potentially lower fees, directly challenging eBay's core seller base. This development introduces fresh competitive pressure on eBay's marketplace model and its high-margin seller segment. eBay, traded as NasdaqGS:EBAY, now faces a new competitor targeting the same professional sellers that are central to its marketplace model. The stock trades at...