Only on Ebay would the price goes up when it doesn't sell

I've been looking for an undercenter spring for my 383-s for sometime now. There is a guy that has listed one for 55 bucks or offer at least two dozen times. It never sells. I have offered 25 bucks for it a half dozen times. He keeps turning me down. I don't know how much he has spent listing the stupid spring, but he is losing money every time. You would think he would give up and ask less just to be done with it.