B) If you withdraw a winning bid at the end of the auction you must pay the auctioneer 20% of that bid.
.....I) Furthermore, once you place a bid in an auction, it cannot be edited or cancelled under any circumstances.

Due to that rule, I will consider that as 16k bid regardless of the edit


General auction rules can be found here https://forum.toribash.com/showpost....66&postcount=3