While other countries' Amazon can ship books and DVDs as economical as possible like small packet, Amazon.co.jp only ships items to your country by EMS which allows you to track and trace, but is very, very expensive way to send.
I was gobsmacked when I found the minimum shipping cost to the UK would be 3,000 yen just for a one CD. Other Amazons can do it, so why not Amazon.co.jp?
Needed to buy some books that were only available on the Japanese Amazon website. Was hesitant at first to buy all the way from Japan, but everything went as smooth as with Amazon.co.uk. Very fast, albeit expensive, shipping. There's an option to show parts of the website in English. Altogether, perfect experience and very happy with the special books.
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