The Google Pixel Slate tablet includes a keyboard and pen for $599 - The Verge
Amazon.com: Google Pixel Slate Keyboard: Computers & Accessories
Amazon.com: Brydge G-Type Wireless Keyboard for Google Pixel Slate | Aluminum Bluetooth Keyboard with Touchpad | Built-in Chrome OS & Google Assistant Keys | Easy Bluetooth Connect: Computers & Accessories
Google Pixel Slate - Google Chromebooks
Hands-On With The Brydge G-Type: A Wireless Pixel Slate Keyboard
At these prices, I can totally recommend the Google Pixel Slate
Google Pixel Slate with detachable keyboard announced
Google Pixel Slate officially announced: here's what you need to know
5 things the iPad Pro should steal from the Pixel Slate (and 3 things it shouldn't) | Macworld
Best Stands for Google Pixel Slate | Android Central
Google Pixel Slate Review: 72 Hours With the New Tablet
These are all the official accessories for Google Pixel Slate | Android Central
Google Pixel Slate review: An expensive work in progress | VentureBeat