I was under the impression that you could "rate" a seller on eBay, along with the reasons whiy. If you rate him badly on his seller's page, this hits his seller's index and cannot be removed from public viewing. He is allowed to respond, but this is placed next to your complaint. One of the most common things to get scuppered with on eBay is a bad Seller rep. I would point this out to him: check how many sales he has, or has had, to see if he's a frequent seller. If he's using it to do a lot of business, this threat *will* count.