I noticed another vendor with AI promos. They are labeled with the name of the AI software they used (in tiny print) but not explicitly as AI, so unless you know that software, you won't know (even if you see the text).

Personally, I think AI is not appropriate for promo images. If you're selling something, you should be showing the actual output you get. Anything else is a misrepresentation. I don't want to buy a product and then find out the result looks nothing like what I saw. That said, if it's allowed at all, it should be clearly and explicitly labeled as such. The rules here should be more strict than in the gallery, because it is representation of a product and not just an image for an image's sake.

But I looked in the terms of service and don't see anything about this. It needs to be a lot more clear what is and isn't permitted.

I'm not calling out the specific vendor because they might not be violating any rules. Renderosity needs to set those rules first.