two-sided auctions: possible actions

In a two-sided auction, bidders on both sides have the ability to place bids, set a reserve price, and counter-bid each other. A two-sided auction typically involves market participants from both the supply side and the demand side, and allows them to negotiate and compete with each other in a fair and transparent manner. Buyers may make bids for certain items and sellers can also put forward a starting price for the item in order to create competition. They can also choose to accept bids only from certain participants, or set a reserve or minimum price for their offering. Additionally, buyers and sellers can counter-bid each other in order to raise their own offer or to prevent the opponent from winning the bid.