Michael,, the ones I did were just part of some advice on the web. I have never paid for anything like this.
I also dont believe that such exercises do anything for you. They are just a way for people to make money. Also, all the penis enlargement techniques out there are hogwash. The only way to get a strong penis is by keeping in good health, i.E. Getting cholesterol down, keeping the heart in good shape, staying away from smoking, breathing well, exercising, keeping weight normal etc.
I have read that a healthy penis goes with a healthy body. You wont find a rock solid penis on a sickly body.
If you are concerned about your sex life, then improve your health. A healthy penis will definitely result when you get a healthy body.