Whew-eee! That's a lot of money for hypnosis. I had 2 sessions for fear of flying. It DID get me to the airport with a confident feeling, and it DID give me some power phrases to meditate to, but it didn't conquer my fear. I wasn't hypnotised, though. I was the most relaxed I've ever been in my life, but his office was at an intersection and I was there for the 5 o'clock rush. I had a hard time focusing. I paid $80 for the first session, and the second session was free since I wasn't totally 'ready'.
I do believe hypnosis works, but you really have to let yourself give in to it. As for weight loss or other ongoing needs, I'm not sure. I was hypnotised for an event which I could additionally prepare for prior to flight. I can't chant before each illegal trip to the fridge.