I think this is a bad idea......being somebody who runs a pet store. What tends to happen is the person buys this type of pet on an impulse buy and then months later when its the size of your tub and you have nowhere to put it you want to get rid of it. They usually end up in the wild and left for dead. Please just say no and get you a bearded dragon or something easier to take care of.....
( Disclaimer not saying you would do this but its just what i have seen happen most of the time)