Flair Puck, WiFi Wireless Thermostat (Pearl White). Controls Flair Smart Vents. Compatible with Alexa, works with ecobee, Honeywell smart thermostats, and Google Assistant. - Walmart.com
Amazon's Alexa-enabled Smart Thermostat only costs $60
ecobee New Smart Thermostat Enhanced - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - Smart Home - Amazon.com
LEVOIT Smart Thermostat for Home, WiFi Programmable Digital Thermostat, Works with Alexa and Smart Sensor, Energy Saving, Large Touch Screen, C-Wire Adapter Included, DIY Install, White - Walmart.com
Emerson Sensi Touch 2 Smart Programmable Wi-Fi Thermostat-Works with Alexa White Beveled Edge ST76W - Best Buy
GE CYNC Smart Thermostat, Programmable, Bluetooth and Wi-Fi Enabled, Alexa and Google Home Compatible, Touchscreen (1 Pack) - Walmart.com
Amazon unveils smart thermostat, 15-inch Echo Show, Astro home robot in new wave of devices – GeekWire
Tuya Wifi Smart Thermostat, Heating Temperature Controller With Celsius/fahrenheit Led Touch Screen Work With Alexa Google Home - Smart Temperature Control System - AliExpress