Sometimes I undercut market prices significantly, precisely because I know it will deflate the market. Farmers and auctioneers are always trying to game the system and control (artificially inflate) the markets. Occasionally it gets a little out of hand and somebody has to come in and poke it.
Otherwise I could really give a crap. Whatever gets me the quick sale is where I'm going. If somebody wants to buy that auction and flip it for whatever he thinks it should have been listed at... I still win.