I can answer this one, but not with any recent experience. People who don't pay can leave negative feedback(or they could in the past since they are technically the winner and that allows them the ability to post feedback). At one time they could and you could retort back, but it was always a my word against his word thing(I always hated that about ebay). I had one deadbeat one time that did this and was verbally abusive in private when you just followed up with them. Apparently there was a trend to how this individual worked when they had buyer's remorse. It took many complaints from other sellers(and some of their buyers) and about 2 years before they finally shut the individual down. There are indeed some real headcases out there who I think get off on playing games. So can't give the night owl any crap for it. Don't know if it has changed so that you can get the auctioned scrapped alltogether so they lose the ability to give feedback when they have been a deadbeat and are just looking to get you back for calling them on it, but that's how it was at one time. Only person I ever had a problem with for the little bit of selling I did on there. And out of about 400 or so feedbacks, that was my only negative.