Blutek through eBay has the 2nd-generation Ecobee Ecobee3 WiFi Thermostat with Remote Sensor, model no. EB-STATE3-02, for $189.99 (regularly $249.99) with Free Shipping for a limited time.
The Ecobee3 2nd generation thermostat features a programmable color touch-screen, built-in Wifi, and is Apple HomeKit compatible. It helps you maintain a comfortable home and has Home IQ to conserve energy. It includes one remote sensor (with support for up to 32), which track temperatures across your home and adjusts temperatures accordingly.