[jfoutz]

Stratasys? I’m not sure about pricing, and the website won’t say.

However, a bunch of places rent out time on those machines. Draw up your rocket, and get a quote. Price is generally cc^2 volume

Metal is not cheap. Make a few out of plastic to verify dimensions.

[quartesixte]

Plastic to verify dimensions is a great approach.

But don't forget that the laser sintering of metal powders might result in design constraints not present in plastic printing!