Ranco Temperature Controler

I've scoured the internet, and it doesn't seem as though I can find a nice, cheap external thermostat for my freezer conversion. This excellent digital model is catching my eye for a minor increase in cost.

http://honeyrunapiaries.com/store/goldline-sp30-replacement-ranco-p-88.html?osCsid=cf716d1fa72e353430d7300fe17266f0 This apiary supplier's price beats Grainger's list, but not quite my company discount. We'll have to see if I can order the controller with my personal card and have it shipped to work.