"Kindle MatchBook" started offering cheaply or free electronic version when Amazon buys a book

A service that Amazon provides an electronic version of the book that can be read by Kindle when purchasing books at a very low cost or free "Kindle MatchBookI started to get started.

Amazon.com: Kindle MatchBook
http://www.amazon.com/gp/feature.html/?docId=1001373341


The book you purchasedThe Kindle version (electronic version) is offered for $ 2.99 (about 290 yen), $ 1.99 (about 190 yen), $ 0.99 (about 98 yen), free of chargeIt is subject to more than 10,000 books sold on Amazon from Amazon 1995 to the present when Amazon began online shopping, including past purchased books. The electronic version is a Kindle reader application, and it is possible to read on Kindle, mobile terminals such as PC, Mac, iOS, Android etc as well. The service will be launched in October, but what will happen in Japan is still unknown.

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Amazon 'Kindle Paperwhite (New Model)' starts reservation from 9000 yen in Japan, Wi-Fi model with coupon for 1980 yen - GIGAZINE