 A judge subsequently ordered Costner to pay a percentage of $6.1 million to buy out the Canevas as his business partners.In October 2006, Costner asked the South Dakota Supreme Court to re-examine the ruling, as an accountant hired by the actor had determined the market value of the casino to be $3.1 million.Costner serves on an honorary board for the National World War I Museum in Kansas City, Missouri.