Breeding mice

i was thinking about breeding mice for my 2 balls i got a baby about 8 months i would say 20 inch long and i got a 3 year old i would say that is about 3 1/2 feet and would it be good to breed or should i just buy every week? and i did breed mice along time ago so i do kno how

Personally, I don't think its worth it for just two snakes. Find a local breeder with a good supply and decent prices. I've rarely found either of those qualities in pet store feeders.

You may want to consider moving your snakes over to rats as well, a lot more bang for the buck as far as nutrition for your snakes goes.