Google recently killed off the 8GB Google Nexus 7 tablet and made the 16GB version the new minimum. Google is living up to its mantra of "Don't be evil" by offering a $50 rebate to customer who purchased a 16GB model via the Google Play store between October 14 - 25.
If you meet the eligibility requirements [eligibility requirements], you can use this page to request your Price Protection.
For those that are wondering, this is open to Canadian AND US residents.