Well I didn't make them to market them, I only wanted them for myself. As for casting them in acrylic, not so easy. I've been in injection molding for 35 years and have worked with every plastic material available, to cast something with no voids is difficult and to top it off you need a threaded hole, so casting then machining?

The way to go for proper part geometry would be to make an injection mold and mold them in acrylic just like the originals. A cheap mold would be a few thousand then you need the material to mold with and a machine. I have access to machines in my work, material and molds and I still wouldn't bother, too much work you'd have to sell quite a few to just break even.

This was for my personal use only, and they came out pretty good