Fish Mongers

From BoardGameGeek:

Fish Mongers is one of the 8 games in Dr. Finn's Book of Two-Player Strategy and Word Games. The game consists of one game sheet and requires no other components -- just a pencil for each player. Players buy fish wholesale at a market to resell to their clients. The game lasts 4 rounds ("hours") with each round broken into 2 periods. At the start of each hour, players secretly make a contract to sell fish, and then bid on fish in the market. After 4 hours, players reveal the contracts made and sell their fish according to their contract prices. The player who collected the most money wins. -description from designer