Quoted from Dewey68:Two questions; did the auction state that the pin was 100% functioning, and did it state that the winning bidder wouldn't have the opportunity to test the pin before taking ownership? If yes to the first one, and no on the second one, you screwed up.
I agree that he may have been "aggressive" with his replies and underhanded with his negative feedback, but I agree with the winning bidder. Unless stated otherwise he should have the right to test the machine.
He had the right to test the machine...off the seller's property and on his own time. He added all his other requirements AFTER the auction was over. Did he ever provide the seller due diligence regarding all of his testing requirements?