Exclusively for its members, Costco offers the Ecobee Ecobee3 WiFi Smart Touchscreen Thermostat with Three Room Sensors for $199.99 with free shipping. That's the lowest price we could find today by $53, although we saw it for $30 less on Cyber Monday. This set includes three remote sensors (with support for up to 32) that track temperatures and room occupancy across your home. The system also features a 3.5" color touchscreen, 802.11n wireless, live local weather tracking, voice control via Amazon's Alexa, email alerts, and remote control via mobile app.