I am after one of these, and according to the info on interweb it is no longer available - "discontinued"

and yet... when I go on:
http://books.rakuten.co.jp/event/e-b...ers/koboglohd/
they seem to be available and for quite a reasonable price, even when one accounts for duties etc.
They also show on e**y for sale from Japan.
So what's the deal?
Does anybody know why it is available in Japan, but not in the rest of the world?
I am tempted to get one directly from Japan, but that would mean no warranty and no chance of returning if anything goes wrong? (or can I get support for it here in UK from Kobo/Rakuten if I buy it in Japan?)