YMMV - Nest 3rd Generation Thermostats - $99 plus taxes, after 50% instant rebate.
This is available for Comed customers but I don't see anything preventing for you to place an order as long as you have a valid address in the area where they provide their services.
Ecobee4 Wifi thermostat is also eligible.
Looks like you can place more than one order. (Limit 1 unit per order)