I did a Google search on direct-to-substrate printers and found quite a bit of information on them... but no price quotes. How much do these cost? Or is it a question of "if you have to ask, you can't afford it"?

Sorry if I was unclear - I meant a price quote on the printer itself, not on having work done on it at a print shop.

Does the Inkscape auto-tracing tool work well enough for this purpose, or does all the tracing have to be done by hand? I know the auto-tracing tool only works well with one color at a time, but if you're doing color separation anyway...