Auctions are a prevalent way to exchange goods and are well-studied for the exchange of rivalrous goods. but are less studied for non-rivalrous goods. I examine an auction framework where the good sold can be used simultaneously by multiple bidders if their use does not conflict with others; this simultaneous use directly affects the efficiency of the auction. A timely example include... https://www.chiggate.com/earthbath-facial-wipes-25ct-fashion/