Yes, you can sell ur AT music (Bc it's an original track). There is a risk tho, you have to make sure that samples are royalty-free, or else u might be in trouble with copyright issues.
If you want to be safe, aside from using your own samples, use the ones provided by Audiotool, Newloops, or the AT Resource Collective only. Those samples are guaranteed to be safe.
Fantastic question 💯