Once a month Jason Welsh Author of First Density Material will offer one model that can be purchased - printed and delivered. The model is completely random and the price will change depending on the model's complexity, the time it takes to print, and the time it takes to assemble.
Pieces can be used in your hobby without any restrictions so you can sell the product you make with them.
Stock up on the model for sale because once it goes in the vault it might take a while to circulate for sale again.
These are also limited runs so they stay rare and valuable.
Skulls and skeletons are at a scale and not the original size. Scale is determined by the author to keep print times to a minimum.
This model takes 11 hrs to print, first come first serve waiting times.