Should I get a king/milk wanks or a bearded dragon? Help plzzz?

I was thinking that milk/king snake would be good because it would be cheaper to feed but cost lots? (please tell me the over all price and the price of the animal itself please Ty) but a bearded dragon would be harder to feed tell me what one you think I should get please tell me the advantages and disadvantages try to leave good care sheet sites if you can. Ty so much