Supply and demand are almost a force of nature.
End times for auctions create little bursts of excitement, but I dislike disappointment more than I enjoy winning, so I look for "Buy-It-Now" situations whenever I can.
I like to play poker with the kids for beans or buttons, but actual money, even individual cents, changes the landscape.
I don't really like bidding and auctions, because if I want something, I want it. Sure, it is nice to make a "find" and snag it for a low price, but that usually only happens when the pool of bidders is as small as possible.