https://www.bidcoin.club/auctions  - for reference

for example

1 NEO = current price is 56usd
 Retail Price: $56.00

Bid winner will only pay $39.00 below... Each time you place a bid; it will be deducted from your remaining bids, and will decrease the price of the auction by one cent. . No more than 60 seconds is added to the timer whenever a bid is placed. This allows another user the opportunity to bid if interested. It's just like the auctioneer shouting “Going once...Going twice...SOLD!” at a traditional auction.

once the winner is decided. the Winner will pay 39usd worth of Bidcoin.