Why the .blend file ships with the render
Selling the still and hiding the scene never made sense to me. Here is what the licence actually allows.
Every paid render in the store includes the scene file. You can relight it, re-frame it, strip the geometry out and use it in your own work, commercial included.
What you cannot do is resell the pack itself. That is the whole licence, and it fits in two sentences on purpose.
screenshot — store licence card
Included: render.png · scene.blend · textures/ · LICENCE.txt
If you make something with a pack, send it to me — I put favourites in the featured row.