I was browsing the eBay and stumbled upon thishttp://cgi.ebay.com/Mini-Digital-Tem...#ht_6534wt_726
A dual temp control with a probe for $17. It has 10A per side which should be enough for a fridge. And at a price that is $60+ cheaper than love dual stage. What do you think. Am I missing something?
You're not missing anything. There is a gazillion page thread on here about these. Tons of us have built fermentation temp controllers out of these.
Look at the bottom of this page for "related links".