I've been out of the scene for a few years now...can't tell you the last time I imported a game. What is the best site to get stuff from? I used to use JapanGameStock a lot but their site appears down right now.
Do the importing yourself and use a YHJ proxy service, or Chief and other members here. Import sites take so much advantage of western customers.
eStarland is OK. Sometimes it is cheaper than Play-Asia, sometimes it has a few extra things in stock, sometimes not. I've had more luck finding low-price imports (new or used) with Ebay than anything else.
I use http://www.nin-nin-game.com/en They sometimes take a bit longer than you'd expect to dispatch stuff, but they eventually do. Prices are fair though.
If/when you can. Someone in japan or jpn middle man service like buyee. else Buygame2 is still one of my more favorite importers (based in hk, been around for years) nippon yasan isn't bad if going for consoles amiami is great if they have stock nin nin games is alright but sometimes can be slow or keep you in the dark if stock is out Play-asia is only good when you want sales or sometimes digital codes ncsx when you don't mind over paying because it's located in usa
It does take some work, but I've been relying on eBay for now, but I don't pick things all willy nilly. Installing this search function into firefox helps alot.