You have the 3D file so can print it yourself (via a trustworthy print farm/print service) and distribute the prints to order or you can allow people access to the file via a website or 3D distribution hub like Cults3D (Sid Naique does it this way) and they print it locally. He charges $14 for a copy of the file to each of his character busts.
The first is more secure as you control who has access to the file and the print quality, but you have to do teh work.
The latter runs the potential risk of someone unlicensed selling print copies but is much simpler and does not make extra work for you.
I would buy this bust (in 1/9 or 1/10) either way.