[Update - Link to full DVD100/BD50 list here]
http://yunakiti.blog79.fc2.com/blog-entry-7367.html
http://myanimelist.net/forum/?topicid=272699
Preliminary DVD 30
K-ON!! Vol. 5 DVD does
4,106 which is, amusingly, its highest yet. 2 was less than 1, but then 3, 4, and 5 all increased on 2 and each other. Of course, it's all within a few hundred.
Gundam UC Vol. 2 adds 8,233 DVDs. No use recalculating the total before week two BDs hit.