Hi I am thinking of doing this and have researched this in many states and the pricing difference is big. The chamber in many are all the same and that I have read is the key to better results. I know the gentleman in Tampa who I was going to see one of his patients did find it helpful and he has his own website talking about it. I have not read though many others who have found it life changing but also not that many people do it cause most insurance won't cover though you may get lucky with that cause I have heard a few got them to or WC. If I do it I will post my results.