There is no company doing it for this market yet. Spreadshirts = t-shirts. Etsy = cheap handmade items. Ponoko = design bracelets and cheapish chachkas. Shapeways = design 3d objects.
So think of it as spreadshirts for a high end industry. Go on, give it to me over the head for not stating the industry, that is what makes HN exciting. I am waiting for it, :-).
Contact me if you are interested agrinshtein [at] the big g. If you cant figure out what that is, I don't want you.