Here is the weekly DVD sales ranking for March 1st - 7th.

DVD
*1, 55,375 55,375 Summer Wars DVD
*2, *5,996 *5,996 Saki vol.9
*3, *4,009 *4,009 GA: Geijutsuka Art Design Class vol.5 Limited Edition
*4, *3,835 *3,835 Kuruneko vol.2
*5, *2,660 *2,660 Katekyo Hitman Reborn! DVD Box
*6, *2,237 *2.237 One Piece 10th Season vol.6
*7, **,*** **,*** The Melancholy of Haruhi Suzumiya (2009) vol.7 Limited Edition
*8, **,*** **,*** Valkyria Chronicles vol.8
*9, **,*** **,*** Durarara!! vol.1 Limited Edition
10, **,*** **,*** Bakemonogatari vol.5 Limited Edition
11, **,*** **,*** Naruto: Shippuuden Shi no Yogen to Fukushu no Sho vol.3
12, **,*** **,*** Toaru Kagaku no Railgun vol.2 Limited Edition
13, **,*** **,*** Shin Koihime†Musou vol.3 Limited Edition
14, **,*** **,*** 07-Ghost vol.8 Limited Edition
15, **,*** **,*** My Neighbor Totoro
16, **,*** **,*** Gintama Season 4 vol.5 Limited Edition
17, **,*** **,*** Hottarake no Shima ~Haruka to Mahou no Kagami~ Family Edition
18, **,*** **,*** Gake no Ue no Ponyo
19, **,*** **,*** Mobile Suit Gundam 00 Special Edition vol.3
20, **,*** **,*** Mobile Suit Gundam Seed DVD Box

Blu-ray
*1, 54,000 54,000 Summer Wars

Sources: Youtaiju, Mainichi, Oricon DVD Ranking