I guess it depends on what you use for substrate and what you decide to feed. (And what it'll eat...they can be picky...LOL) But really, for one snake, the monthy cost is minimal. Buying expensive rats at a chain petstore...and using a substrate that has to be replaced periodically, I'd guess $20-$30 a month. Finding less expensive feeders at a mom&pop store...or buying frozen in bulk...and using newspaper or something similar for substrate could reduce that cost significantly.Originally Posted by mysaabisfaster