For a limited time, Best Buy is offering a $150 gift card with the purchase of an Oculus Rift. This deal means that if you decide to put that $150 towards Oculus Touch controllers you can get the full Oculus Rift experience for $650 minus tax.
The Oculus Rift+$150 gift card deal is available online and in brick-and-mortar stores. I recommend just going to a physical location because they'll give you the gift card as soon as you purchase the Oculus Rift. Most Best Buy stores are currently out of Oculus Touch controllers, but according to representatives there, shipments will start coming into stores Friday and shipping to home addresses may arrive as early as Thursday.
There's no explicit expiration on Best Buy's Oculus Rift+$150 gift card deal, but I would be surprised if it lasted longer than the end of the week. With the gift card lowering the price of the Oculus Rift and Oculus Touch combined to $650 now's a great time to purchase them.