You can pick up a LARGE clear plastic bin for $10.00
Spend $8.00 on a soldering iron
Spend $12.00 on a set of 4 luggage padlocks.

Voila, a cage--for only $30.00. Holds humidity great, VERY easy to clean and sterilize because it's so light, and although the visibility isn't perfect like glass or acrylic, you can still watch your animal.

BAH (Big Apple Herp) has good thermostats for a low price--and they have flexible heat cord that works great for a very low price, too.