I agree with Doms and have some points to add... .in purchasing this animal you will be supporting a trade that is depleting the animal from its natural habitat and causes thousands of deaths in the process. As well, you will be getting an animal with health issues and problems with acclimation.
That could be the reason why they are so cheap. Ultimately its up to you, but there are many healthy captive bred out there that need homes too
psst....tell your roomie first, surprises aren't always nice