I still use eBay, but only with caution. I will never buy software through them again, though.
I run a website company, and would buy copies of the Dreamweaver software our content writers use, but my last three transactions were both pirated versions. On one, the seller refunded my money. The third one is what earns eBay my $#@! Rating, because eBay let him get away with manipulating the system and cheating me out of my refund. As soon as I discovered it was a pirated copy, I lodged a complaint with the seller. He didn't respond right away, and when he did, eBay didn't tell me until several days before the dispute period was about to expire. I sent back the software according to their instructions, but the seller then delayed his response until the dispute period actually did expire and I was left with not even a pirated copy of the software and he had my money. I hollered at the eBay people, but they just brushed me off.
So watch for incredible deals on "new" software and just pass them up. EBay will not stand behind you. These shysters will just close old accounts when they get bad reviews and then open new ones.