It's like Vegas or an indian gaming casino.... the house always wins!
In most cases the house collects from both the buyer and seller. Isn't that a bit insane. Yes, I get it, the auction house has a bit of overhead.
To me, if you have something that isn't rare or scarce and the prices are known, then you could probably figure out the value of the item based on past sales and then put it up for sale with a discount that takes into account the auction houses take (buyer and seller premium). Oh no, now I've opened up myself to being called an idiot because I made a comment with how I feel about this... go ahead, it's open season, call me an idiot and get it over with...