If you haven’t ordered the Nexus 6P yet, you are out of luck. The US Google Store is out of them. All the colors and storage options are no longer available for pre-order. Only the Aluminum color was the last one to be in stock until today.
You do have another option though, Huawei’s online store. They also offer a payment option too. Judging from waht I have been reading at Reddit, they will be shipping phones from multiple hubs here in the US.
I placed my order minutes after the announcement and I have a estimated shipping date of October 27. How about you?
Edit: 32GB aluminum is back in stock.