BuyDig via eBay offers the Honeywell WiFi Smart Thermostat, model no. RTH9580WF, for $128.99 with free shipping. That's $1 under our mention from a month ago and the lowest total price we've seen. (It's a current low by $30.) This thermostat can be controlled via iPhone, iPad, Android device, Alexa voice control, computer, or via its built-in touchscreen.