I am pretty sure the rolling block pistol is kind of a nitch item. It is a shame that Uberti has stopped making them. However if you have the skills and tools or know a smith that does. you can buy casting kits from Rodney Storie (sp). I don't have his contact info handy but he can be found on the ASSRA Forum. He also has kits for the #7 as well.That will give you a chance to have one at a reasonable price. Down side is the stock for the #7 is a bit on the pricey side but TReebone does have a pattern. I don't know if anyone makes the grips for the pistol or not. That may be a diy project. His castings are 8620 so they will harden up nicely and show some nice colors if done right.
Sam