Some do and some do not. It's certainly not a requirement to sell your products R2R however there are several sellers on here who both sell and contribute the files to the open source community such as @TheHarold , @TheKingInYellow , @Gotfrogs , and myself. If you sell your parts and want them incorporated into this list you must share your files though. This list is first and foremost a repository of freely available designs.Do those that sell their prints on r2r also share their files as well?
Hey @bo0ks , thanks for the awesome design. I noticed that you have it a 15% infill, do you have any issues with it floating? I printed another design that I found and it wouldn't stay down.