Before you go to that store and have them happily dance their way through your wallet, spend some time here researching housing for ball pythons. A lot of things you might buy at a pet store can be purchased elsewhere for a considerable cost savings. A lot of what the store is likely to tell you is a "must have"...either isn't or is in fact a "should not have" (an example of this would be the heat rock a lot of pet stores still peddle).

I'd save yourself a lot of wasted cash and grief with spending some time researching here first.