Hi Marco,

the shown model is a free one, available for Shade3D and served only as example.
You are right however, one could start an additional business segment with that
in case he/she is a good modeller of the human form, or uses high-res head-scans
as a source for a bas relief.

I know two successful russian artists who do excellent bas relief artworks for 3D Print
and CNC with ZBrush, but i am not sure if those things would guarantee a steady
income here in Europe and i am only a hobbyist, who does not plan to do 3D business.

Regards
Stefan