Look at how much money they have spent trying to corner the market on both used and NOS stuff. Remember all the hype around Pine Lake last year. I don't know what the cost of these cylinders are, especially at dealer prices, but if he can cause some hype and sell a few extra this year plus all the used parts(plus labor and more machine work) he needs to build them, then I'd guess that he'll be real close, if not above his investment. The rest will become profit. I'm sure dealer pricing doesn't give him a whole lot of extra price break. Not much at all I'm sure.
I'm sure I'm not the only one dying to know what the "secret" is, but I won't ask