Thanks!
The AP cages do look like a good deal. But when I played with the cart... Even the T8 (with a light fixture, heat tape, and lock) ended up costing almost $300... I played with the cart some more and added another cage and set of accessories to see if that would help on shipping costs, but apparently you don't get a break on shipping when you buy more than one cage at a time.
I may have to look into a seller that comes to a show near me... Maybe getting a cage delivered will at least save on shipping (I think the shipping for AP was $60 per cage).
If 15" is tall enough, then I could use one that tall... I have a Jaguar male Carpet that will need a cage as well. Do you have a pvc perch in there for him or a shelf?