So, http://www.spyderrobotics.com/products/index.html sells Herpstats and gets the product to you really fast.
Also, Rich at http://www.reptilebasics.com/Thermostats-p-1-c-250.html will get a Herpstat to you pronto.
I highly recommend these two places and these two t'stats.
As always, you get what you pay for