LOS ANGELES (Oct. 31) - Bob Barker is heading toward his last showcase, his final "Come on down." The silver-haired daytime-TV icon is retiring in June, he told The Associated Press Tuesday. "I will be 83 years old on December 12," he said, "and I've decided to retire while I'm still young." Though he has been considering retirement for "at least 10 years," Barker said he has so much fun doing the show that he hasn't been able to leave. "I've gone on and on and on to this ancient age because I've enjoyed it," he said. "I've thoroughly enjoyed it and I'm going to miss it." Reaching dual milestones, 50 years on television and 35 with "Price," made this an "appropriate" time to retire, Barker said. Besides, hosting the daily CBS program - in which contestants chosen from the crowd "come on down" to compete for "showcases" that include trips, appliances and new cars - is "demanding physically and mentally," he said. "I'm just reaching the age where the constant effort to be there and do the show physically is a lot for me," he said. "I might be able to do the show another year, but better (to leave) a year too soon than a year too late."