The cast members of MTV’s hit show “Jersey Shore” aren’t as famous as they think. We hear their managers have been trying to get clubs to shell out up to $10,000 for appearance fees — but no venues are taking the bait. “The Chandelier Room at the W Hoboken turned them down,” a source tells us. “They keep turning up at places like Marquee and Tenjune and the Eldridge for free, so why pay?” A rep for MTV didn’t get back to us.