Temporal Blu-ray + DVD Rankings for Summer 2012 (the first volumes)

*1, 22,254 Kyoukaisenjou no Horizon II
*2, 10,461 Tari Tari
*3, 10,325 Dog Days'
*4, *7,728 Yuru Yuri ♪♪
*5, *7,274 Muv-Luv Alternative: Total Eclipse
*6, *5,347 Hakuouki Reimeiroku
*6, *4,876 Jinrui wa Suitai Shimashita
*8, *4,852 Oda Nobuna no Yabou
*9, *4,221 Joshiraku
10, *4,187 Campione!: Matsurowanu Kamigami to Kamigoroshi no Maou
11, *3,762 Arcana Famiglia
12, *3,337 Koi to Senkyo to Chocolate
13, *2,810 Kono Naka ni Hitori, Imouto ga Iru!
14, *2,409 Hagure Yuusha no Estetica
15, *1,945 Dakara Boku wa, H ga Dekinai.
16, *1,900 Moyashimon Returns
17, *1,888 Rinne no Lagrange Season 2
18, *1,370 Binbougami ga!
19, *1,338 Chouyaku Hyakuninisshu: Uta Koi.
20, *1,282 Upotte!!

Source: myanimelist