[wwchevy]

I've sold a few things on ebay and I have refunded money or canceled deals mutually to keep everyone happy, but always as a mutual agreement between buyer and seller. If you go there with the intention of completing the deal (after all a deal is a deal) and you aren't happy, you may come to an agreement with the seller. Barring that, complete the deal and leave negative feedback ruining their 100% positive rating of 1. Aproach it like that and I think you will be happy.