I tried it and lost 17 pounds in 3 months. I got off of it and gained 9 of those pounds back. I then went back on it 3 months later and have lost those 9 pounds and now I am doing SP. I don't think it is really more expensive to do it because you won't be buying all the junk food that you may already have been eating. You do buy your own fruits and veggie though but that is a given. I honestly thought it was easy to do. I just wasn't disciplined enough to watch my portion control on my won.