Sale of the Century ( stylized as Sale of the Century) is an American television game show that originally debuted on September 29, 1969, on NBC daytime. It was one of three NBC game shows to premiere on that date, the other two being the short-lived game shows Letters to Laugh-In and Name Droppers. The series aired until July 13, 1973, and a weekly syndicated series began that fall and ran for one season - the game consists of contestants answering general knowledge questions. At certain points during the game, the player currently in the lead is offered an Instant bargain a prize to keep regardless of the game's outcome in exchange for a certain amount deducted from that contestant's score.