I used a proxy service. I don't think they ship outside Japan.
I size one up from what I would get in European sizing. I have a feeling that the sizings don't match up perfectly, especially the more oversized pieces (I think they are tweaked slightly smaller for the Japanese market).
Yeah, I find that the clothes are tailored differently for the Japanese market. Sometimes I go up two sizes, sometimes one depending on the measurements. The sleeves on the jackets always seem to be shorter than what I'm used to, even when I take a size large (I'm a size small). They have them styled like this in the images, not sure what the appeal of the shorter sleeves are, especially on outerwear but maybe it's a Japanese thing?