Chronic Pain Support Group
Physicians and professionalsdefine pain as chronic if it lasts longer than three to six months and is persistent. It's distinct from acute pain that is a direct result of injury or trauma. This support group is dedicated to those suffering from chronic pain. Discuss treatments that have worked for you, find advice for your specific experience, and find support. You're not...

If it turns out the best thing for you is the can't ship to Canada deal...you could have them shipped here if you want and I.ll ship them to you..( I promise not to steal them....I can't use internal or external electrical simulators........)
Hugs...jc..
http://www.medicalproductsonline.org/
I just got a 300$ original unit for 40$. Hope it helps as I haven't tried one, but I had acupuncture with it and it seemed to help.
Good Luck
Gramps