I got my seat from a company called Overseas in Canada, I just gave them a call and they are still in business.

http://overseas-auto.com/Home/index.html

I found my seat at overseas and my contact was named John, and he got me a screaming deal on a seat I didnt know I could afford. Got it to me super fast too.... they are out of vancouver

(800) 665-5031

I picked up what looks like a earlier version of the Orthoped. The thing that saved me a bunch is that I purchased a right seat instead of a left. This meant the controls for the power adjustment are on the left of the seat and you go over them entering and exiting the truck (instead of the right side) but this saved me 5-700$ (so I got the heater, vent fan and power lumbar) which was well worth it!! If you dont mind having the "other" seat from a pair, you can get a rocking deal.

Let me know if you need more info