As a owner of a 3D Printer i was asking myself the exact same question. Also: The printed parts on the pictures look ok, but not exactly good. I understand that you have to take print time into consideration while mass production, but this is a device that directly interacts with a users hand. Sanding is needed in this case. Or: Printing it by myself in a decend resolution. Would be nice to have this option and pay a bit less for the kit.