Reminds me of perhaps the world's sleeziest use of claqueurs: Tony Robbins conferences. At some cheap local weekend event, when Tony presents his coming attraction, the more expensive week long conference, the crowd goes wild. People jumping up and down and cheering. Your fellow attendees shouting to you, "Wow! I HAVE to go to that!"

Then you sign up and find out 2 weeks later that your fellow attendees at the loss-leader conference are your trainers at the big gig.