Had a few thoughts re your question you dont mention your useage expectations but, off the wall sugestion 1. could you perhaps look into etched dies ie photo etched plates, male and female. Could be a relatively low cost low use option plus your artwork will last indeffinitely. Off the wall sugestion 2 I have worked on LOM machines in my rapid prototyping days. These were made by a co called Helysis, The LOM stands for Laminated Object Manufacture.Basically a CNC gantry laser paper cutter. This tech is now old hat by modern standards but could be sourced cheaply and there is still backup available. Look at the 2050 model not 1015.
Bell me on 01502 712574 if i can help more.