You could always try to sell it, or just keep two tanks and buy a matching one. You could also save the tank and put a different lizard/reptile in it. I don't know if it's a tall or a wide one, but some do better in wide tanks (like the leos) and other in tall, especially climbing lizards.
yeah it must look awesome...i just wish i hadn't spent 200 dollars on this freaking thing....i don't mind getting another tank as it wouldn't be that expensive...but just knowing i bought the exoterra and not going to use it is going tick me off and besides waste of money big time.