I dunnno man. Even with one bp and u feed it once a week (depending on prices) can still run ya 30-40 bucks in feeder mice or rats a month. I only have 3 snakes and i breed my own mice. I chose mice over rats becouse i kinda turned it into a side project and i can have alot more mice more quickly and all sizes. u might want to buy a 10 gal tank and throw a few females and a male mouse in there and try it. it def cuts down on cost.