There are two types of auction methods: "blind auction" and "quick sale".
In the "blind auction", bidders cannot know the bidding prices of other bidders. The member with the highest bid at the end of the auction period becomes the winning bidder.
In the "quick sale", the NFT is listed with the bid price quoted, and the buyer cannot bid at any price other than that amount. The bid is awarded as soon as the purchaser places a bid.