If anyone is interested in these, let me know, but be warned, these are going to be costly to machine... Lots of milling, and the rotary table will need to be tilted 45 degrees to do it right.
Well for just one of them, it's going to be ~$40-$60 depending on size, and that's because of the amount of machining and setup time involved. If we can do a group buy of sorts for them, then I can definitely get them down close to ~$25-$35 depending on size. Not sure if I can get them much lower unfortunately.