Go wander thru thrift stores looking for large shelves etc, that can be converted. If you city has a big trash pick up day, drive around and look at the stuff people are tossing out. There are a lot of ways to construct a decent habitat that won't cost an arm and a leg. Even building one from scratch will not cost you anywhere near 600 dollars unless you go hog wild on fancy woods and accessories. Its basically a big wooden box. That way of looking at things is a bit of a problem. New keepers, whose only experience is with warm blooded pets, often do not understand. A dog, for instance, has a body built to heat and cool itself off and maintain itself. It is adaptable to a wide range of conditions. It can be 90 degrees or it could be 30 degrees and they will be just fine A reptile is built to survive under a very narrow set of specific conditions. it is totally dependent on it's body being in the proper conditions to survive. If its too hot, the animal over heats. If its too cool the animal cannot process its food and it's immune system defenses against diseases and parasites is lowered. Unfortunately this really isn't negotiable. Not providing the proper conditions immediately will end up costing you a lot more in vet bills later and may even result in the death of your pet.