The main thing you need to ask your self is wether or not you are able to devote the amount of time needed to care for a cham vs a snake. Do you like crickets? Are you going to keep them around your house in containers to gut load them before feeding them to your cham? Do you have the proper caging and lights? Chams require a much higher level of husbandry to keep them healthy. Do lots of research before you deciede. Initial purchase price will be the least of your expenses.