bis45, If you are talking about the single shot, I spent an entire week hand polishing it. No way it can be commercially viable, unfortunately. Same with individual grip making, I figured those were $800 grips when I made them about 1993.
Just finished a set of extension grips for my early pre-kit gun I-frame custom, several full days of work. Now it needs polishing and bluing, part of what brought me to this thread.