The Dutch auction start 2009-09-11 17:55:00 to 2010-10-18 12:55:00
Bidding range:$10 - $20
The times of Dutch auction is unlimited, every bidding you have to spend1 integral
The system will choose the users who Dutch auction on the prize and give the lowest price which is different from the others(namely the lowest and unique Dutch auction) as victory who Dutch auction on that.
The victory will buy the prize according to the period price of Dutch auction.