Yesasia should do you fine, they don't sell bootlegs in general, maybe the odd item once in a while, but the 99% of their stuff is authentic.
Purchase over $50US and you get free shipping with Yesasia, and they also offer Overseas version in addition to Japan version.
www.cdjapan.co.jp
is another alternative, but they only sell Japan version and the shipping is pricey. (No free shipping).