Competitive Auctions on eBay.com. The file eBayAuctions . xl s contains information on 1972 auctions that transacted on eBay.com during May-June 2004. The goal is to use these data to build a model that will classify auctions as competitive or noncompetitive. A competitive auction is defined as an auction with at least two bids placed on the item auctioned. The data include variables that describe the item (auction category). the seller (his/her eBay rating), and the auction terms that the selle