It's so annoying some of the numpties you get on ebay. The winning bid is the winning bid. End of. It's the seller's risk, if they want to put a reserve on they should do that when posting not after the event. Unfortunately whilst they probably have a contract to sell it to you they will most likely just close their account if you don't agree as I've seen that done before. Also, would you really want to deal with someone who does that no matter how good the price is...? It's a bad indication, there could be other cans of worms there (van is knocked off etc.).
