While I get what you're saying, I think an important point here thats been mentioned several times is the fact that the tickets lose all value as result of the

While I get what you're saying, I think an important point here thats been mentioned several times is the fact that the tickets lose all value as result of the buyer backing out. As a completely unrealistic example, imagine if by some magic, cars that weren't sold exploded. If you had a buyer back out, and as a result, you could never sell that car again, that person would most definitely be put in the "KO book". I think the situation is different, if only slightly. There should be some understanding from the buyer of the tickets that backing out is potentially costing the seller a lot of money. For this, I can understand the sellers frustration, if only because he might have had several extremely viable offers outside of hers, that are now lost. That said, I don't agree with his reaction at all. Is it not possible to try and contact the other interested buyers who were out bid?