Steve02 must be a lawyer, though I can't tell from his profile ("unjust enrichment" and "common law" are terms only lawyers and Okeedon use /forums/images/graemlins/smile.gif). His advice seems sound in the context of a legal hypothetical (that wasn't a dig on you, Steve). On the other hand, I can't help but think that your time, in and of itself, has value. Furthermore, Okeedon and GerardC make some good points -- what was your storage cost? Do you have additional taxes owed on this piece of equipment, whether inventory or personal property, etc. because the buyer backed out? What are your costs to relist the tractor for sale? What is the worth of the goodwill you gain/lose from how you handle this particular transaction or lack thereof? Chances are you gain no goodwill from sending the $250.00 back, but you sure as heck will get some bad internet press for not doing so (have ya checked out why people leave negative feedback on eBay lately?) Negotiating between a refund of $250.00 and $0.00 might be inconsequential in the grand scheme of things. I say send 'em the $250.00 and sell the thing for $2,500.00. Everybody's happy.