@FediTips @manyfold

Never seen their only file format offering "ply" and not heard of any of the slicers the file can be opened with.

Have they heard of Prusa Slicer?
Of the 4 slicers they offer files for, only Cura is mentioned in this list:
https://www.3dsourced.com/3d-software/best-3d-slicer-printer-software/

Have they heard of STL files that can be opened in most 3D design programs?
How about 3mf files that can be loaded into just about any slicer?

Another site, yes, but definitely not an alternative site for most 3Dprinting folk