Jack N' Box

I am in the U.S. since I am aware of the new 2257 props of having to keep records I figure I would try to purchase some content and I was just wondering how this works on my end.
Is the cash 100% in my pocket on each sale after I purchase it or?
If so great but how do I handle it?
Where is the best place to shop for it then besides here?
I a newb and need some help sorry