Season 5 of CHUCK --its final in the series- first week DVD sales figures have been released and they are actually better than seasons 1 and 4. Check out the numbers for all seasons below.
Chuck: The Complete 1st Season - 38,122
Chuck: The Complete 2nd Season - 99,042
Chuck: The Complete 3rd Season - 76,302
Chuck: The Complete 4th Season - 40,228
Chuck: The Complete 5th Season - 57,217
Source: the-numbers.com