Anyone any idea of costs in the UK? My 87 year old grandma swears she wouldn't still be walking if she hadnt had it years ago (she has arthritis. In fact she's the starting point of it in my family, came from her to my mum to me :/)

I'm really self conscious though and conscious about my weight.

Does it still work if you're overweight? Like do the wires still hit the spots they're supposed to or will extra fat stop them working?

Do you ask for one area to concentrate on? Because I have various things I could really do with help for at the moment & am interested.

Also how do you know they're good vs the bad ones some people say they've had? Is there a board they register with? Or qualifications?