Best Buy has the Geek Squad Certified Refurbished Nest 3rd Generation Learning Thermostat, 2015 model (Stainless Steel, T3007ES) on sale for $140 with free shipping. 

Learns your schedule to keep your home a comfortable temperature without wasting energy. Can be controlled via Wi-Fi from your smartphone or laptop. The 3rd gen model has a solid stainless steel finish, and is compatible with more heating and cooling systems.