Ha Ha - Rancor does look like a painful poo...
eBay buyers are getting away with murder -- all that will happen is you may get your listing fee back, but the time and effort you put into selling it, in a legit auction, goes to waste. Sucks. I had a similar incident where the winning bidder sends a message that they changed their mind and didnt want the item... opened case and all said and done I couldn't even leave negative feedback and lost my listing fee. eBay doesnt have time for the small time sellers anymore.
Good luck with it anyway. I go for mailing off a box of colon sausage in place of the rancor.