deskthority

I would say this answers most of your needs : https://www.keychron.com/products/keych ... 7332794457

If you want to go fully custom, then https://thocstock.com/ is the site where you'll find all of the products (cases, switches, PCBs, keycaps, etc) that are in-stock

The OP, a copy and paste of a recent reddit post, may be legit or not.
In any case, any attempt to add a spam link is doomed to fail

Call me a cynic, but it seems like this could be an attempt to get people to respond with lots of detail around the custom boards scene - most likely to assist with SEO.

On the offchance that this is a genuine post, I'd suggest taking a scour through the geekhack interest checks, and past group buys for the board layouts they prefer.

I'm guessing this is likely spam based on the users profile history.

And I'm guessing Kbdfr has this locked down quite nicely.