It's not just the buyers who are scammers - the amount of counterfeit and significantly-not-as-described stuff being sold is astounding. Ebay is large enough to do their own sample purchases, but clearly they just don't care. I stopped using Ebay after they sent me a message saying that I had contested too many transactions (all due to counterfeit goods) and could not contest again for some period of time.

I'm interested in what will happen when Ebay becomes a site for scammers sellers to transact with scammer buyers.