This is a pretty rare deal.
Amazon has the Weber Genesis Series E-310 Liquid Propane Grill + $100 Amazon Credit for low $699.00 Free shipping. Tax in most. These grills are rarely discounted.
As stated on the Amazon item page - "Get a $100 credit from Amazon.com when you order this grill. The credit will be applied to your account after the item ships from Amazon, and can be redeemed on Amazon.com products before December 31st, 2015. Here's how (restrictions apply)"
http://www.amazon.com/dp/B0045UBB36/?tag=cl03f-20