Is the McGuire Programme Good? And what do you do on the course?

Is the McGuire Programme Good? And what do you do on the course? So I have been stuttering since I could speak (around four years old), and since then, I have stuttered since. I have been taking this speech therapy course for about one or two years, and it did not seem to work very well. Therefore, I decided to take another route and explore some other courses. I stumbled upon The McGuire Programme. I signed up for it because it seems to work wonders for all stutterers. It was A LOT of money, but I hope it was worth it.