Yes if you are the seller then they take the money back. Ebay holds your "funds" so you can't run away with it. Paypal will freeze your account (although you can take it out before that if you want to). If it's over ebay then you might run into even more trouble with your account. Seller gets screwed over and there is not much you can do about it. This is why selling replicas on ebay is a risk, they really don't like it and will side with the buyer each time.
I keep up with sneakers a lot. Real stuff but also bought replicas and sold them too. I am familiar with the "sneaker" culture I guess, although, I don't like to call it that. Anyway, I've seen good sellers get scammed for much less and that's with authentic sneakers. So it's a matter of do I trust this person on ebay versus am I going to get screwed over by paypal/ebay/buyer. There's always the risk of running into a scammer with anything but replica shoes you really have to be cautious as the seller because technically you are at fault and the buyer has nothing to lose but their time.