After reading this post I get the impression that some people are addicted to the bidding process, I assume for the thrill of winning (which I admit is pretty kewl). But when the rush ware's off, they're left with bill they may not want to pay. Not all of them, obviously, just some. Though I am BIG TIME sorry The Silver Age is dealing with this hassle, I'm glad to learn a little bit more about the ups and downs of selling on ebay. Haven't tried it yet, but someday I'll be looking to unload many of my "non-essential" books in order to make room in my home.
Good luck TSA