BlenderKit's Royalty-Free License allows users to download and use assets for commercial purposes, with certain restrictions. You can incorporate these assets into your projects and sell the projects (e.g., renders, animations, or games) as long as the assets cannot be easily extracted from the final product. However, you are not allowed to resell, redistribute, or repackage the original assets in their downloaded form, even if modified. This means you cannot, for example, take a 3D model and sell it on another marketplace or as part of an asset pack. (Textures removed)

The license is non-exclusive, non-transferable, and does not require you to credit the author, although doing so is encouraged.

It is not being Sold, it is a Royalty Free License, It has been modified. https://www.blenderkit.com/docs/licenses/licensing-faq/

I honor DMCA take downs anytime, Problem solved.