Sounds like a real nice cage. Can you post some larger pictures so we can see how you did yours?
That is at least 56 feet of 2X2's. In my area pine 2x2's are hard to come by and the stores that do carry them charge too much for them - not to mention that they are badly warped. Last month I found a lumber yard that had them in oak (I think, and they were nice and solid, but were really expensive)!
Did you rip the 2x2's yourself? I used over 130 feet of 2x2's in my last enclosure and cut them out of pine 2X10X8s on a 99 dollar table saw and they came out surprisingly strait. If I would have purchased the lumber already cut it would have cost me a small fortune.
Either way, things can add up pretty quick when you include the hardware such as L-brackets, deck screws, FRP sheets, ½ X 1 inch pvc coated mesh, etc... but nothing beats a home-made custom cham cage.