Here are 4 great places to buy cheap English books in Japan. They also make for good options to sell or trade any books of your own.
The Ultimate Guide To Tokyo
8 Tokyo Bookstores Filled With Foreign-Language Books - Savvy Tokyo
Where to Buy English Manga in Tokyo - KKday Blog
Japanese books book shop in hi-res stock photography and images - Alamy
Where to Get English Books in Sapporo – Highlighting Hokkaido
My First Trip to Japan: Bilingual Japanese-English Children's Book (Japanese-English Kids’ Collection) [Yoo, Yeonsil, Halionka, Anastasiya, Bessler,
My First Trip to Japan: Bilingual Japanese-English Children's Book (Japanese-English Kids' Collection)
Where to Buy Cheap English Books in Japan
Where can I get cheap English books in Japan? - Quora
Return to Japan by Elizabeth Gray Vining - Hardcover - 5th ptg - 1960 - from Twin City Antiquarian Books (SKU: TRJP00001)
5 translated books from Japan to soothe battered souls this fall : NPR
Kodansha International's Bilingual Books Series
New and Used English Book Stores in Tokyo - JapanLivingGuide.net - Living Guide in Japan
Where to Buy Cheap English Books in Japan