https://ergomech.store/shop/product/lily58-3 - as far sa I understand since it has hotswap sockets you don't need to solder if you get the "pre-assembled" version, but still need to get your own switches and keycaps.
None that I'm aware of. And I don't plan on running one of my own -- too many other things going on.
That said, I ended up creating a Discord months ago after a whole bunch of people were going to run their own GB, needed a place to "host" it... never eventuated due to the COVID logistics problem.