We'll click the 'Sell' button which brings up a page very similar to the Siring contract details. We need to select a starting price, ending price, and number of days to list Coolio for. Let's start at Ξ0.1, end at Ξ0.02, and list for 30 days. The price of Coolio will steadily drop over the course of 30 days. Coolio will cost Ξ0.1 at the time of this posting, and if Coolio were to sell in exactly 15 days, it would be for Ξ0.06.