Glad to see Amibench back
I dont think auctions are a good idea - it will be like eBay where you have to be hovering over the computer for the last ten seconds of the auction to click the bid button or you get sniped. I like the current system better (buyer states a price in his ad, and you buy it at this price, no haggling).
The feedback system sounds like a good idea also. I have bought a load of stuff on Amibench and usually had no problems at all but did get ripped off once (they cashed my cheque but never sent the goods) and this made me wary.
