You can find my work a number of places…
My Itch Store doesn’t do any physical products (sorry) but you can get PDFs of my RPG materials: the Beta Maxx Cartridges, Quick Start Packs, and my D&D modules or help books.
You can get physical products at DriveThruRPG, but for now the only place where you can get hardcopies of the Beta Maxx X cartridges is from me either because you’re lucky enough to meet me at a Con, you won a copy I’ve given as a prize, or because you’re willing to pay the potentially ludicrous postage to get my stuff out of Australia and into the rest of the world.
This is actually where I started being a professional, of a sort. I’ve still got lots of work here, and in time I plan to bring Beta Maxx Cartridges to Roll20 with a Beta Maxx Character Sheet for each of them, but it’s another task that for now I would need to learn how to do more elegantly.