“Pawn Stars” will air its 500th episode on Monday at 10 p.m. on History. “Pawn Stars” debuted July 26, 2009. After completing the first season, Corey was about to tell his father and grandfather that he didn’t think all the additional work was worth the meager uptick in business. “The show definitely hit at the right time. It couldn’t have been a better time for it to hit,” Corey says. “Oh, no. I was hoping for a season or two and hoping it would help out business,” says Gold & Silver Pawn Shop owner Rick Harrison. “I never thought it would turn into this.”