Not everyone is in auctions for the game, some people want to actually get the item. Though I imagine there's less and less of them, as most figured out long ago that auctions are a stupid waste of time.

In fact, I'm somewhat angry at sellers setting up auctions if there's no other way to acquire a specific item. Why they won't put a minimum price they're happy to part with some items for, instead of wasting time of a lot of people by withholding target price and pretending they're earning premium through work?