Very intriguing, I didn't realize that aluminum could be nickel plated. They were done at a shop in Anaheim called TechPlate. From their website, the price for the fame would be $96 and for a slide $70 http://www.techplate.com/firearms_pl.htm
It looks like their minimum for electroless nickel is $180, so maybe we could get a couple more frames together to make the minimum. I would like to try a frame to see what it's like.