Goliath Bird Eaters

[girraffasaurus]

I'm thinking about getting my bf a Goliath for X-Mas. I saw one in a mall pet store (couldn't resist just looking) and they had one for $250 (U.S.$$). How much should a young one normally cost? Do you think I'd have much luck looking for one in specialty shops or should I just purchase one online? I've never done that before, how safe, expensive, etc. is it? What size tank would I need, and what would I be feeding a youngin'? Thanks for any answers to these question!