Tyler i fully agree that no one should be monetizing this (except you, maybe post the files to cults if you ever get to a final version lol) ... and i've never been particularly happy about the karl bib situation ... partially due to him not releasing his dropper dies, then having to actually pay him for one that broke before it ever dropped a bullet.
i will admit i have made 2 of these for friends (who don't have printers) but the only money that exchanged hands was for physical parts like the motor speed control and stuff like that (one even supplied me with a roll of filament) i don't charge for printing time, assembly or wiring.
i believe i'm ok under the license doing that. (please correct me if i'm wrong)
personally i believe this unit is better than the daa unit, which is why i never purchased a daa unit ... i had to get a couple running right for other friends and knew it could be better (and already owned a printer so ...)
i started by modifying the RVB opensource feeder to suite my needs then found the ammomikes one and now yours ... (which basically had all the modifications and more that i did to my RVB variants)