Home Depot offers the Lux/Geo 7-Day WiFi Programmable Thermostat in White or Black for $89 with free shipping. (Amazon charges the same in White for Prime members only.) That's $6 under our March mention and the lowest price we've seen. (It's the best for any color today by $18.) It features three power options via microUSB, battery, or C-wire and free iOS and Android application with geo-fencing. Deal ends November 23.