Small print - Buffett has already admitted, in the event that someone is sitting on a perfect bracket going into e.g. the Final Four or the Championship Game, that he would likely offer a buyout. Buffett believes that, to the average person, there is no difference between e.g. $100,000,000 and $250,000,000; and, he believes, if offered the choice between the chance at the full $1B or a pre-Championship buy-out at e.g. one-tenth to one-quarter of the full Monty, that the average fan could be low-balled.