Amazon Japan is incredible. I ordered a Japanese book from them and it arrived the next afternoon (to the UK!) Another time I was in Japan and I needed a specific bluetooth keyboard for the tablet I was using, delivered to a convenience store pick-up point in the deep north of the country in the middle of winter, ordered with my UK credit card, and no problem, it was there the next day. I can't imagine the amount of organisation both of these things take.
Amazon Japan used to be in a league of their own, but a mix of their home-rolled delivery service being objectively bad and them allowing their platform to be dominated by scalpers (転売ヤー) means that they've lost a lot of the trust I had in them.
