We used to do group buys of custom keyboards like that. Generally the organizer finds a factory or etc willing to do it for a certain volume and then you see if

We used to do group buys of custom keyboards like that. Generally the organizer finds a factory or etc willing to do it for a certain volume and then you see if that many people are interested and will put down the money. It's a lot of organizing work mostly if you have the design ready for a factory