Consumers who pre-order Google Pixel from Google Store will receive a promo code that will allow them to get Daydream View VR headset without an additional cost, totally free.
I did spend a bit to read the short terms and according to the pre-order terms and conditions, the offer in the United States starts at 10/4/2016 and the code need to be redeemed until 12/31/2016. After that date, you will no longer be able to redeem it. You also can't exchange that offer for cache and it's only available for that specific pre-order of the Google Pixel smartphone.
Google follow the same offer that Samsung offers to its customers. Those who buy the Samsung Galaxy S7 or S7 edge will receive the Gear virtual reality headset for free. The value of this offers worth $79, which is the price of the Daydream View VR headset if you buy it as a standalone product.
I think it's a great offer, especially for those who really wanted to be among the first to try out this new Android mobile VR platform Daydream.