Posting the top 20 singles and albums. The first column after the position number refers to (estimated) weekly sales. The second column refers to (estimated) total sales.
Soundscan Weekly - Singles (3/12~9/12/2012)
*1 85,836 86,639 AKB48 - Eien Pressure (TYPE-A)
*2 63,974 64,629 AKB48 - Eien Pressure (TYPE-B)
*3 56,638 56,844 AKB48 - Eien Pressure (TYPE-D)
*4 54,920 55,506 AKB48 - Eien Pressure (TYPE-C)
*5 45,170 45,319 EXILE ATSUSHI - MELROSE ~Aisanai Yakusoku~ (SINGLE+DVD)
*6 18,755 18,775 EGOIST - Namae no Nai Kaibutsu (First Press Limited Edition) (w/DVD)
*7 15,879 15,955 GLAY - JUSTICE [from] GUILTY (CD+DVD)
*8 15,660 15,730 GLAY - Unmeiron (CD+DVD)
*9 14,623 14,626 Aomine Daiki (Suwabe Junichi) - TV Anime 『Kuroko no Basuke』 Character Song SOLO SERIES Vol.9 (UNSTOPPABLE)
10 12,210 12,237 EXILE ATSUSHI - MELROSE ~Aisanai Yakusoku~
11~20:
11 11,254 11,257 Kasamatsu Yukio (Hoshi Soichiro) - TV Anime 『Kuroko no Basuke』 Character Song SOLO SERIES Vol.11 (NEVER LOOK BACK)
12 *9,474 *9,481 2AM - Dare ni mo Watasenai yo
13 *9,406 66,082 The MONSTERS - MONSTERS (Limited Edition A)
14 *8,111 *8,112 Kasamatsu Yukio (Hoshi Soichiro) - TV Anime 『Kuroko no Basuke』 Character Song SOLO SERIES Vol.11 (NEVER LOOK BACK)
15 *7,560 45,815 Kobukuro - Kami Hikouki (First Press)
16 *6,370 46,611 The MONSTERS - MONSTERS (Limited Edition B)
17 *6,028 *6,044 Nakashima Mika – Hatsukoi (First Press Limited Edition) (w/DVD)
18 *5,750 *5,786 Hotei Tomoyasu - Don't Give Up
19 *4,919 *4,920 Aida Riko (Saito Chiwa), Momoi Satsuki (Orikasa Fumiko) – TV Anime 『Kuroko no Basuke』 Character Song SOLO SERIES Vol.12 (GROWING UP!! / Brand-new Season)
20 *4,833 34,542 The MONSTERS - MONSTERS (Regular Edition)
Soundscan Weekly - Albums (3/12~9/12/2012)
*1 177,647 178,650 EXILE - EXILE BEST HITS -LOVE SIDE/SOUL SIDE- (First Press Limited Edition) (2CD+3DVD)
*2 *87,013 623,530 Mr.Children - [(an imitation) blood orange] (First Press Limited Edition) (w/DVD)
*3 *85,106 *85,543 YUI - GREEN GARDEN POP (First Press Limited Edition)
*4 *84,272 *84,701 YUI - ORANGE GARDEN POP (First Press Limited Edition)
*5 *80,660 *80,817 EXILE - EXILE BEST HITS -LOVE SIDE/SOUL SIDE- (2CD)
*6 *47,937 *48,041 EXILE - EXILE BEST HITS -LOVE SIDE/SOUL SIDE- (2CD+2DVD)
*7 *31,670 374,871 Matsutoya Yumi - Matsutoya Yumi 40 Shunen Kinen Best Album Nihon no Koi to, Yuming to。 (First Press Limited Edition) (w/DVD)
*8 *29,024 128,001 Matsutoya Yumi - Matsutoya Yumi 40 Shunen Kinen Best Album Nihon no Koi to, Yuming to。 (Regular Edition)
*9 *18,076 *18,146 HY - Route29
10 *17,919 *17,973 Hamasaki Ayumi - again (MINI ALBUM+DVD)
11~20:
11 *14,724 *72,837 Shoujo Jidai - GIRLS' GENERATION II ~Girls & Peace~ (First Press Limited Edition) (CD+DVD)
12 *13,218 *13,230 BIGBANG - SPECIAL FINAL IN DOME MEMORIAL COLLECTION (Mini AL+DVD)
13 *11,892 103,719 UVERworld - THE ONE (First Press Limited Edition) (w/DVD)
14 *10,623 *10,630 androp - one and zero (Limited Edition)
15 **9,225 **9,247 YUI - GREEN GARDEN POP
16 **9,157 **9,181 YUI - ORANGE GARDEN POP
17 **8,240 *93,505 JUJU - BEST STORY ~Life Stories~
18 **7,934 261,278 Arashi - Popcorn
19 **6,828 *73,435 Kato Miliyah - TRUE LOVERS (First Press Limited Edition) (w/DVD)
20 **6,801 *13,284 Shimizu Shota - MELODY
Note: Soundscan ranks sales for each version, and has a little bit smaller coverage of stores compared to Oricon. Though sometimes, Soundscan numbers can be higher than Oricon's. Soundscan also doesn't include label-owned and agency owned stores like Avex/mu-mo shops and AKB's chara-ani.
This is only an experiment. I won't promise that I'm going to do Soundscan every week, but I'll try whenever I have the time.
Source 1, 2