Setting up my Amazon.jp account today.
The books are more expensive. Richard Russo's "Bridge of Sighs?" $10.17 on Amazon, ¥2616 ($28) on Amazon.jp. Still, its cheaper than sending stuff from the US.
You can buy alcohol at the Amazon.jp.
Once you get out of the English language books on Amazon.jp, they really don't expect to serve the english speaking community. But its fun to click around anyway.