The original Nest Learning Thermostat, (first generation model no. T100577), drops from $249 to $179 with free shipping at Lowes.com. That's the best deal we've seen on it to date, and $19 less than our Black Friday mention. This thermostat "learns" how like your room's temps and sets your system automatically. It also features built-in WiFi that allows it to download data and be programmed from your smartphone. Sales tax is charged in most states.