Some people use eBay for their livelihoods, due to the auction format used on eBay often you find most of the money only comes in within the last 10 minutes so you might not be surprised to find out a lot of people might feel cheated if no one could bid on their items when they were finishing.
Alternatively you could blame and tell them to get a shop as that's obviously a five minute job but I'd be willing to bet if it was your money you'd be a little less nonchalant about the matter.
Biting the hand that feeds IT
