Reshared post from 中川聡:

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Original Post from 中川聡:

Amazonや楽天のリアル書籍と電子書籍との差額をすぐに確認できる「電子書籍サーチ」 - GIGAZINE

via Public RSS-Feed of Kazuo Ito. Created with the PIXELMECHANICS 'Google+ to RSS-Webtool' at http://gplusrss.com https://plus.google.com/108013264503511141086/posts/WrzRT1mMJ8c