I agree with The Golem. I should have bought that tank. The one I bought is perfectly fine and works just fine, but it would be nice to have those side-doors and side ventilation. I have regular tank. nothing special on the sides. the only special thing about it is that it has a mini door on the top so that I don't have to remove the entire screen every time I want to get into the cage. I also think my tank is bigger than the one in the picture. Honestly, I went a little wild and got one too big.

For acquiring a tank, I would suggest looking at local reptile/pet shops. They often have used tanks for cheaper than new ones. You might also check at Yard Sales, 50% of all yard sales I've been to have some sort of fish tank or terrarium.