NeweggFlash offers the Honeywell WiFi Smart Thermostat, model no. RTH9580WF, for $154.99 with free shipping. That's $5 under our mention from March, the best now by $12, and the lowest total price we've seen. This thermostat can be controlled via iPhone, iPad, Android device, computer, or your fingertips if you're feeling ambitious. Deal ends May 16.