Or normal commerce? especislly now that crypto and tax evasion is a big concern. Its simply too risky these days to trade any goods/services for fiat or traceable crypto in p2p way. (Facebook marketplace/etc) If the people you have traded with are 'bad people' its likely you will get a tap on the shoulder and questioned. So what happens? We use fiat and ebay instead and they get all thier fees and i cant buy used underwear easily.