I would have to agree with Monkey. If he took the time to bid that low on the item, and he won it then why should he feel bad for the seller? If I got a pair of leaping boots, for example, for 35k instead of 350k I would be very happy and lucky. I wouldn't even consider selling them back to the buyer or giving him extra money. Sometimes there are lazy people who put stuff up for 1 gil bc most of the time the buyers start at the lowest price on the history, or a little below it. This is why you should always double check your sell status, and take your time while bidding on items. (not only to get them cheaper, but to prevent from over bidding like monkey did)