Google is always generous with freebies with their products, at least if you are in the USA. Most of the Chromecast users will agree with me here. Google has always bundled free 100 GB Google Drive space for two years, with every Chromebook. With Samsung Chromebook Plus (and most probably Samsung Chromebook Pro too) Google is adding one more freebie to the list, a free $20 credit.
Users are reporting on Reddit that if you are on the Stable channel of Chrome OS on your new Chromebook Plus (congratulations, btw!) this offer is valid till July 1st, 2017.
Update: Claim your freebies here: https://www.google.com/chromebook/offers/
I do not have any information on how to access this offer on your device though. Users report that they “saw this offer on the screen” and clicking “redeem” instantly added $20 to their Google Play Store account.
If you are a proud owner of a shiny new Chromebook Plus, do try this out, look for this offer and share the details with your friends. Do not forget to drop me a comment here with instructions to redeem this offer!