The auctionsystem has its problems, people might be shy about placing orders early and high, since the gold is deducted and kept in escrow.
And there is really no reason ever to not wait until the last minute before placing your bid. Makes sniping the wise way to play, not showing your hand before its to late.
I suggest adding
http://en.wikipedia.org/wiki/Dutch_auctionWhere the seller sets the minimum reserveprice ,startprice, and timeframe.
Buyers can preplace bids at the price they are willing to pay.
And once the price goes down to either a valid bid or reservationprice, the auction is settled.
How many are bidding should not be public knowledge.
Put inplace a feesystem that encurages sane pricing intervals(setting reservationrprice too high or startingprice to high has a nonrefundable cost)
Pros:
No canceled auctions
No tieing up gold in 1 auction, place bids on several with the same gold.
only takes 1 bid to finish.(better chance for seller to get a good price).
Excitment!!!
Cons:
None.