Hi there, I wanted to make a little point : Sell : you set a price, people buy it or not. Eventually if several people want it, you sell it to be highest offer. Generally small/common items are being sold, because most of the time the price is easy to evaluate. Auction : you set a starting price and a countdown, you wait the end of the countdown to take the highest bid. Normally big/rare/valuable items are being auctioned because the price can vary a lot depending on how much people