There is another way to get the japanese manga's, you can go to the Kinokuniya Bookstores. They have a couple of stores here in the US. Below are the addresses of their US locations. If you are lucky enough to live by any one of these stores, then you made it. They have every Japanese manga, book, and magazine you can think of and at good prices. They also airmail the Weekly Jumps every week so that people can buy them, that's where i get mine every week. If you don't live by any of these, then your best bet is Sasuga.
525 South Weller St., Seattle, WA 98104
Phone: 206-587-2477 Fax: 206-587-0160
E-mail:seattle@kinokuniya.com
10500 SW Beaverton-Hillsdale Hwy., Beaverton, OR 97005
Phone: 503-641-6240 Fax: 503-643-1059
E-mail:portland@kinokuniya.com
1581 Webster St., San Francisco, CA 94115
Phone: 415-567-7625 Fax: 415-567-4109
E-mail:sf@kinokuniya.com
675 Saratoga Ave., San Jose, CA 95129
Phone: 408-252-1300 Fax: 408-252-2687
E-mail: san_jose@kinokuniya.com
123 Astronaut E. Onizuka St., Los Angeles, CA 90012
Phone: 213-687-4480 Fax:213-621-4456
E-mail: los_angeles@kinokuniya.com
3030 Harbor Blvd. #G-3, Costa Mesa, CA 92626
Phone: 714-662-2319 Fax:714-662-2474
E-mail: costa_mesa@kinokuniya.com
10 West 49th St., New York, NY 10020
Phone: 212-765-7766 Fax: 212-541-9335
E-mail: nyinfo@kinokuniya.com
3360 Palisades Center Dr. West Nyack, NY 10994
Phone: 845-353-6600 Fax: 845-353-0407
E-mail:pcinfo@kinokuniya.com