Well that depends on where you live, if it's a more northern climate and a more remote bike shop it's more likely they'd stock it. If you're looking for one I'd suggest somewhere like Ely, Mn.

It's low cost and effective, but I get the feeling it's really only for the elite of the elite. I mean the costs are huge. Food every day, paying handlers, insurance for the handlers...I get the feeling it's a training technique that only real pro's can afford to use consistently.