The AH bots really hurt this game. It's hard for classes that don't do well vs bosses (ex: Melee) to get liverto weapons, and when they can't buy them it's a real progression block. The game is supposed to be wealth and market driven, but players who don't use AH cheats can't participate in high end items.
I think a better solution would be to remove the stupid price setting and let the market determine the price.
What I don't understand is what the AH botters are doing with the items. There can't be that many people using it, and you can't do much except put it up for auction, right?