Coned in New York has smart thermostats currently $70 - $100 off with an instant rebate. Additionally they are offering $85 off if you install and register the device with them. They are also throwing in a free Google Home Mini to sweeten the deal!!
https://marketplace.coned.com/nest-thermostat-sale-5-18/*Please note you will need to register the thermostat with coned, possibly giving them access to adjust thermostat temperature.