i think yhere is a void usrr repository thjng aroind somewhere, but also maintaining a distros package repository is not something u simply onboard more people, there has to be trust and accountability to make sure malware isnt being packagesd to users meow
also the aur is run under archs infrastructure so there is a little bit of single point meows
and if you want to go even cheaper get an esp32 board with an sd card slot (i like the tdongle from lilygo) and it can just serve yhe sdcard files meow