After visiting Roys place last year I was awe-struck (is that a word?? It's mine now!! lol)
You're not the first to use it
I've seen the RSP's going for 15k or so. But are they rarer than than the chondros?? Harder to breed?? I'm guessing a mixture of the two.
Easier to breed (according to the only person who has done it) but rarer and probably most importantly, virtually all the animals are held by one person. For once I agree with the mainstream view on a price prediction; I think the price of rough scaleds will drop very quickly once what exists becomes available. Hooray for the few people like me who want them!