What's a point to trade BitCoins on eBay? It's risky since violates TOS, will most probably result to listing cancellation (e.g. loss of listing fees) and could possibly result to account suspension. What you get on other hand? - a Paypal payment from a person with, let's say 3k positive feedbacks. Does it mean this person has no intention to claim a rollback on the transaction later on? NO. Will you be hit by this rollback directly through PayPal? YES. Will you then, after counting losses, be able to post a negative feedback on the person you've dealt with? NO, since he/she'll most probably report your listing so it'd be cancelled becasue of TOS violation.

I'm not actually saying PayPal-BTC trading is evil. I'm just saying eBay is not the right place for it to happen.