A combination of English and Dutch auction methods

It is also called "decreasing price auction" or "high-estimate auction". It means that during the auction process, the auctioneer announces the starting price and the decrease of the auction item, and calls the price in turn. The first bidder will hit the hammer to win the deal. However, the transaction price must not be lower than the reserve price. It is a combination of English and Dutch auction methods. It means that during the auction process, after the auctioneer announces the starting price and the minimum increase, the bidders will bid the corresponding price, and the auctioneer will raise the price in turn, and the highest bidder will win. If no one bids, the auctioneer will lower the price and the decrease in turn, and call the price in turn, and the first bidder will win. However, the transaction price must not be lower than the reserve price.

Sealed Bid Type

Also known as bidding auction. The buyer submits the sealed quotation sheet (also known as the bid) to the auctioneer within the specified time, and the auctioneer selects the buyer. Compared with the above two methods, this auction method has the following two characteristics: First, in addition to price conditions, there may be other transaction conditions to consider; second, it can be open or closed. This method may be used when auctioning large facilities or large quantities of inventory materials or government confiscated materials.

Standard incremental type

This is an auction method adopted when the number of auction items is much larger than the demand of a single bidder (this auction method is very suitable for auctions of large quantities of backlog materials). The seller designs a curve of the relationship between demand and transaction price for the auction item. After the bidder submits the required number of items, if he accepts the transaction price quoted by the seller based on his quantity, he can become the buyer.