Why does the description state that the product comes with a "free" first sensor? If the product is packaged with the thermostat and a sensor, and priced at $249, then that is the free market price for the product, one sensor included. This is at the best, a hopeful marketing ploy, and at the worst, false advertising. Offer a second sensor as a special for free, and then you get closer to the truth. *I'm not blaming best buy, as this could very well be the script from the company, but someone needs to fess up!