1. The Problem - If you want to buy an item, which is offered several times in (internet-)auctions and you want to pay a finite maximum price, then you have to bid for each offer separately until you suceed buying at your maximum price or lower. This is unpleasant. 2. The Solution - Order the auctions you are interested in in a list I (the auction, that will finish soonest, first) and mark some maximum price p_I for the list. Now an (computerized) agent might bid for the first item on...