Where to buy multivitamins

Where can I buy a large container of multivitamins for a cheap price?

In America, I would buy something like this:
http://www.amazon.com/gp/product/B0008FUSZ4/ref=as_li_ss_tl?ie=UTF8&ta...

I saw some vitamins at the convenience store but they were specific (vitamin A, vitamin C etc..), small, and very expensive.

Costco has them for about 1500 yen per 500 tablets. Online stores like Amazon.co.jp, theflyingpig.com, and fbcusa.com also carry them.

Try iherb.com and choose Yamato for shipping. It's a company based out of California.

Also try http://en.kenko.com/ (or regular kenko.com if you can read Japanese)

you can get most of it at pharmacy/drugstore in japan..
http://www.amazon.co.jp/s/ref=nb_sb_noss_1?__mk_ja_JP=%83J%83%5E%83J%8...

マルチビタミン(multivitamins)&ミネラル(minerals)