My pilates studio is about to do a Groupon. Has your studio done it, and is it worth it?

I think sites like Groupon damage the actual and perceived value of a private training, or Pilates session. I also think its shows insecurity on the part of the person offering it, that their service is not that great that it can be discounted. Since classes are not profitable unless they are large, I believe coupon sites act as a chance to pad out a room where gyms or yoga studios want to see if they can pick up a few random members, but for the most part, they are teaching the public that it’s always and only about price. I don’t see doctors, architects, engineers and any service-oriented, confident career person offering discounts through any such service. Why would they need to? And I know for sure that the person who got the $15 PT session is not running to their doctor with some “coupon” to get a cheap diagnosis, after getting an injury from said “lesson.”