Quote Originally Posted by LadyOhh View Post
a GOOD one can run $100+

You can get some for $30 as well..
Agreed, I'd say the cheapest reliable thermostat is a ranco or johnson.

http://www.reptilebasics.com/Thermostats-p-1-c-250.html

Check these out, if you get a ranco or johnson, make sure to get a pre-wired one unless someone you know is handy with wiring.