You can grab the Official Google Pixel and Pixel XL Cases from Google Store at 50% off while supplies last. Currently there are Four types of cases for both the Pixel and Pixel XL available with discount.
At $17.50, you get the three layer case with silicone exterior, polycarbonate core, and microfiber interior. You get Clear Pixel Case at $15, Google Earth Live Case and Google Trends Live Case for $25. Google Store