So, I only chatted with the rep because I was trying to figure out the difference between this model and the 463242716 (which is nothing but one is called Signature, and one is called Commercial so Lowe's can have an "exclusive" model to sell...that's it) and he gave me a coupon (FREESHIP) for free shipping, then offered an additional 20% off and no tax, if I ordered right then. The code for free shipping works on checkout, but you'll have to complete the order at regular price and give the rep your order number. He adjusted it and emailed me a new invoice. Not a bad deal on a decent grill.
For reference, Tractor Supply has this exact model on sale for $429 plus tax.