You can order this through the PCBway Shared Project as well now:
https://www.pcbway.com/project/shareproject/Amiga_Pregnant_Mouse_3_button_version_f910c5ea.html
Additionally, a variant of the bottom shell was added to support the Board Folk (chris-jh) project to create a modern laser version!
More info here: https://github.com/Board-Folk/PregnantLaserMouse
The author marked this model as their own original creation.