Lol, I'm prepared to run a game? No way, but what is there isn't really for sale, because I, shhh, don't own CGL's property, but insofar as it's fair use in CGL's eyes, your free to use the free-as-in-beer stuff. The fiction-specific stuff is similar, since I publish all fan fiction on this forum, first. Ergo, provided all the ducks are in a row, you can use any of that stuff in the app as fodder for the, most likely, much better game to play on Roll20.
I'm glad you like it, though.