Bidders place bids on bundled items rather than only single items. Useful for complements, complex
An public, open, ascending-price auction, highest bidder pays their bid and wins
Each bidder submits one private bid without seeing others’ bids. Highest bidder wins, pays own bid.
Multi-unit extension second-price logic. Bidders bid for several units, pays opport. cost on others
Combinatorial auction where bidders bid on packages as single bundles. Joint values > sum separately
Multiple auctions at same time over multiple rounds. Bidders switch across items as prices evolve
Bidder has one private bid. The highest bidder wins, pays the second-highest bid. Truth telling doms
Multiple identical units. Winners pay same market-clearing price, highest lose bid or lowest win bid
An open, descending-price auction where the price starts high and falls until someone accepts it.