There was a company that advertised with DAZ or Renderosity a few years ago during Christmas.  IIRC, they would accept scenes exported as .obj files.  DAZ seemed to support this at the time and, according to some posts I remember which were discussing "2nd skins" and other things produced with topology tools, DAZ has "relaxed" some of their stance as long as it isn't the original mesh.  Confirmation on something like that, of course, is always necessary to be sure.

The costs for that service, IIRC, ranged from $50 or so on up for an exported .obj being laser-etched into acrylic/glass.  But, for rapid-prototype tooling, the cost could be more.  Not too long ago there was a thread around here with some links to people providing that service.  IIRC, people were using it to reproduce their MMORPG/Superhero characters in statue form.  It didn't seem outrageously expensive for what it was although resolution is King as far as price goes.