Selling site/app templates but with backend included? Basically, get a running product right out of the box.
I've seen quite some template sites out there where you can buy an admin dashboard or a landing page, but I haven't really seen "full-package" deals.
Would you buy a whole package that comes with frontend and backend, where all you would have to do is configure a few accounts (e.g. google analytics) here and there depending on your needs?
I believe I've seen a few of these. Are any of these what you're thinking of?
If you're talking about mobile apps, I haven't seen something like that. I would certainly be interested in a platform that provided the maintenance and backend for a very basic codecanyon-ish flutter/react mobile app. I would even pay a premium for a white label option. If this was your intent, do consider it! I think it's a promising route.
Thanks for sharing these links and your thoughts!