You can shop around and look for the best prices. Amazon has a lot of good buys on cages and other supplies. If you can only get one cage I would get the big one and maybe buy an older cham to start with. I got Omar when he was 3 months old and put him right into a big cage, but, I also cup fed him which he took to right away so I did not have to worry about him hunting down his food. I have a young panther now and he is in a smaller cage. He free range hunts his crickets and really doesn't seem interested in bugs in a cup! It makes me nervous cause I don't know exactly how much he is eating! They pretty much all disappear and there are not a million little crickets jumping around the house so he must be getting them. Still I would rather he cup feed but I have only had him a week so I am just doing what he was used to. I hope that in time he will adapt to a cup.