Here is the weekly manga sales ranking top 30 for July 27th - August 2nd.

*1, 119,155 *,119,155 Pandora Hearts vol.9
*2, 107,679 *,301,825 Moyashimon vol.8
*3, *94,426 *,177,856 Saki vol.6
*4, *89,565 *,135,913 Saiyuki Gaiden vol.4
*5, *72,944 *,*72,944 Gunslinger Girl vol.11
*6, *69,086 *,132,125 Otomen vol.8
*7, *52,820 *,*98,811 Initial D vol.39
*8, *51,644 *,112,206 Keroro Gunsou vol.19
*9, *47,830 *,*87,223 Aozora Yell vol.3
10, *45,407 *,*90,254 Kiyoku Yawaku vol.10

11, *45,015 *,133,107 The Melancholy of Haruhi Suzumiya vol.9
12, *42,917 *,119,711 Suzumiya Haruhi-chan no Yuutsu vol.3
13, *40,217 *,*40,272 Spice and Wolf vol.3
14, *36,276 *,*36,276 Sekaiichi Hatsukoi vol.2
15, *35,188 *,109,899 Ah! My Goddess vol.39
16, *34,343 *,118,791 Giant Killing vol.11
17, *34,035 *,*34,035 Futari Ecchi vol.43
18, *33,572 *,*33,572 Moon vol.4
19, *33,232 *,305,533 Hayate The Combat Butler! vol.20
20, *32,704 *,241,153 Cross Game vol.15

21, *30,756 *,225,395 Fairy Tail vol.16
22, *29,233 *,*29,233 ZE vol.8
23, *25,707 *,131,394 Pride vol.11
24, *23,171 *,*23,171 Cuticle Tantei Inaba vol.4
25, *23,086 *,*37,761 Kurokami vol.12
26, *23,002 *,*45,160 Sweet Mission vol.9
27, *22,948 *,*22,948 One Piece Recaps The 14th Log
28, *22,763 *,*22,763 Last Inning vol.22
29, *22,706 1,739,762 One Piece vol.54
30, *19,631 *,432,340 Gintama vol.29

The last week's ranking: Japan's Weekly Manga Ranking For Jul 20 - 26
Source: Oricon comic ranking

Additional news:
Twin Spica ended on August 5th in Comic Flapper magazine September issue. The final volume will be released on October 23rd.

Source: Natalie

Weekly Light Novel Ranking for Jul 27 - Aug 2
*1, 45,361 49,238 Kami no Moribito vol.1
*2, 43,900 47,626 Kami no Moribito vol.2
*3, 28,162 35,474 The Grimoire of Marisa
*4, 19,136 19,236 Hakushaku to Yousei vol.20
*5, 15,730 15,730 Hayou no Tsurugi Chapter 6 Part 4
*6, 13,009 13,009 Monster Hunter Shippuu no Tsubasa vol.5
*7, 12,972 17,784 Summer Wars
*8, *8,896 *8,896 Gakkou no Kaidan vol.10
*9, *8,680 *8,680 Kyouran Kazoku Nikki Extra vol.5
10, *8,476 64,215 Seitokai no Ichizon vol.6

Source: Oricon Novel Ranking