Price is $169 but after address verification to makes sure you are a ComEd customer, an instant $100 rebate is applied at checkout.
Bought Third Gen Nest Thermostat for $99 a month ago, but that deal might be gone now. $149 is the current price, after $100 rebate. Price was $230 for 2 Third Generation Nests and 2 free Home Minis. You can try and chat with them to get that deal and that's why I'm mentioning it. YMMV on them honoring it for the third gen model.