Auctions | Bulk Buy

: "Auction-Based Mechanisms for Electronic Procurement" describes scenarios where purchase requests are aggregated and bundled into a single Request for Quote (RFQ), allowing suppliers to provide volume discounts through competitive bids.

Multi-item auction where all winners pay the same price (usually the lowest successful bid). bulk buy auctions

Price drops for all participants as the total volume of bids increases. bulk buy auctions

Multi-item auction where winners pay their individual bid prices for their chosen quantity. bulk buy auctions

A helpful paper covering "bulk buy auctions"—often referred to in academic literature as or multi-unit auctions —is "Bidder's Strategy Under Group-Buying Auction on the Internet" .