Amazon offers the Honeywell Lyric T5 Wi-Fi Smart Programmable Touchscreen Thermostat for $99 with free shipping. (Newegg charges the same price.) That's the lowest price we could find by $6, although most stores charge $149 or more. It features Alexa and Siri voice control, 7-day flexible scheduling, smart alerts, and control via the Lyric app for iOS or Android. It requires a C-wire.