How much does it cost to feed mice to snakes?

The cost of feeding a pet snake mice will depend on the size of the snake, and also the prices at a local pet store. Many pet stores have "feeder mice" that are relatively cheap, and bred for feeding snakes and other carnivorous reptiles. These mice can usually be purchased for less than $3 apiece, and many snakes that eat them will only need to eat once a week. However if a snake is larger, rats may be the more economical way to go, and many rats cost around $5 apiece.