There are quite a few sites that offer the japanese version and ship worldwide, such as
yesasia.com. Of course, it's region code 2, as well as japanese, with no english subtitles on the dvd.
Many folks over here actually ordered their japanese copies a while ago.
Not tough to get a legal glimpse of it if you can get around that linguistic obstacle

'course, the best is to wait until you have a chance to watch it "properly", however that may be for you. It's a fantastic movie.
Me: Written impression pending...