I stopped buying off eBay after I fell for a well made scam listing and they made it literally impossible to contact a human being so I had to file a charge back. Mind you, this was after they nuked the scammers account AFTER I paid for the order, so they knew they were scamming, didn't reach out at all, and tried to make it impossible to do anything about it.
Fuck eBay. They know damn well they've got scammers, and more importantly, they're perfectly happy to keep their cut after the scam is over. I'll only buy off eBay as a last resort if I need it and can't get it anywhere else.