Yes. I know. Niche market.
Right now I'm focusing on dwarf, hairless, harleys, red eyed martens, dalmations, and black eyed siamese.
I socialize them, and send a lot off to pet homes or to other breeders. Basically the culls feed the snakes and the rats cover their own care costs.
So it's been very cost effective for me to breed my own rats and use them feeders with just 5 snakes...But I really enjoy working with the rats. All my breeding stock are beloved pets.