Well, I don't know about the $3500 bucks, seems like a huge amount to me. Do you have dental insurance? I have TMJ. It started about 20 years ago with severe migraine headaches and with a lot of research, I came across info on TMJ. I went to my regular dentist and he dx'ed TMJ and made a device for me to wear at night only. Talk about a miracle! Within a couple of nights my migraines were gone, never to return. Well, not never, I have one maybe every couple of years but I don't think they have anything to do with my TMJ. I still, after 20 years, faithfully use my mouth device. Not pretty but no more jaw and headache pain. At the time I received my device I had dental insurance thru my DH work and only had to pay 20% of the cost and I don't remember it being alot---but hey, that was 20 years ago.