I too considered it and my spouse had a long chat with the owner. I am dubious about the claims....there is no peer reviewed research to back it up; if the machine is so wonderful, why has it not been adopted or bought by others; the owner does not make it clear that he DOES NOT have a PhD (he writes ABD after PhD but it takes a university person to know that means he did his coursework and some exams but did not write the research thesis....a key part of the PhD), etc. Also, look at the list of conditions and diseases that he claims to be able to treat....pretty extensive and far fetched.
I think what helps some people is that his clinic focusses on the neck....which will help a lot of people ... But the same as if they went to a good physio /physical therapist.
Having said all that, if I lived right there and had a load of money, maybe I would try it! I am desperate, after all. Like many here.
If you haven't done so already, maybe you should post about your symptoms and you can get some good advice from the great people on this site.
It is hell....and I can completely understand your search.