http://www.nippon-yasan.com/
I used them recently for Bravely/Default Square Enix shop exclusive and it came well packed and at a decent speed even though I picked SAL. Using them again for Okami HD. They seem good and so far their prices are better than Nin-Nin (think they might even be the same esatblishment...) and definitely Play-Asia. Shipping prices might be a bit here/there though.
Thankfully the site layout has very recently changed. Originally the layout left much to be desired and one may have even been suspicious of them, but they've been excellent on my first order!
Edit: There are a few teething problems on the site but you'll be able to navigate easily and purchase stuff. Only the buttons and other bits of info don't translate when selecting English however, Google translate will do it for you.