Bidding methods are strategies used in auctions or competitive situations to determine the price of goods or services. Common methods include English auctions, where bidders openly compete by raising their bids, and Dutch auctions, where the price starts high and decreases until a bidder accepts it. Another popular method is the sealed-bid auction, where bidders submit confidential bids without knowing others' offers. The highest bidder typically wins in this format. Each method has its advantages and disadvantages, influencing how participants strategize and engage in the bidding process.