Credit is based on phone received matching the description provided at time of estimate, and will be issued as a credit card refund back on the credit card used for the phone purchase at Google Store or in the form of store credit.
Additional terms are located here:
https://store.google.com/intl/en-US_us/about/device-trade-in.html
2 Save $250 on Google Pixelbook with Intel® Core™ i5, 8 GB RAM, 128 GB SSD, originally $999, now $749. Offer valid starting August 12, 2018 at 12am PT through September 3, 2018 at 11:59pm PT.
3 Save $50 on Google Pixel Buds, originally $159, now $109. Offer valid starting August 12, 2018 at 12am PT through September 1, 2018 at 11:59pm PT.
4 The Google Assistant on Google Pixel Buds is only available on Android and requires an Assistant-enabled Android device and data connection. Data rates may apply. For available Assistant languages and minimum requirements go to g.co/pixelbuds/help. Requires a Google Account for full access to features. Google Translate on Google Pixel Buds is only available on Pixel.