Given it is a known common practice to post to the ah to store items by pricing items where no one would buy them in their right mind, it makes seculation about the true state of the AH economy impossible to determine.
one of the faults of the AH is the idea that items are returned to the player. In a normal auction, someone wins. I think one way to address this issue is to have the ah set the min price, and allow the player to set a buyout, but if the item does not sell, the player does not get the item back, but rather gets what the highest bid was... if there is no bid, they get the minumum (this could be what a default store would pay...so you gamble the ah fees in a worse case senario)... This would 'fix' the ah economy in one week.