$10
72mm and 120mm design - easy to scale up or down in your slicer software
You will get two models, one in each size. Each model is a single-file model for easy printing.
this is Kuber Vázquez design
Link to original Kickstarter campaign: https://www.kickstarter.com/projects/kuber94/war-on-olympus-3d-printing-only-stl-files/description