The cheapest way to get my 3D printable models is my Patreon page.
You'll get 10 STL:
All the pieces are keyed.
You can buy also the Male version and the Female one separately, but it will be more expensive.
For personal use and one commercial project (up to 2,000 sales or 20,000 views).
One copy to be used by a single user.
One installation by a single user.