In the original version of "The Price is Right," four contestants one a returning champion competed throughout the show. After a merchandise item was displayed (often by beautiful models aka Pretty Purchasers), the contestants, one at a time, bid on the item. Unless otherwise specified, each bid had to be higher than the previous bid; each contestant could "freeze," or stop bidding, if they believed their next bid would cause them to overbid, thus disqualifying themselves from winning the prize. The bidding continued until an undefined time limit expired. Host Cullen then announced the price of the item; the contestant who bid closest without going over won the prize (and on occassion, won either a bonus prize or got to play a bonus game). The last prize of the day usually was the most valuable and often determined the day's champion, who got to return to the next show. A special feature of the original "Price is Right" allowed home viewers to bid on special showcases. When the show moved to ABC, contestants competed against a celebrity player, who played for a home viewer.