I purchased these items last month at Maruzen Bookstore. I was browsing the language and certification section and made an impulse buy. For those looking for these books, or planning to buy them: Sanshusha Revised Edition: Interpreter Guide Examination - English 1st Stage - 3,080 yen Revised Edition: National Interpreter Guide Examination - Practical Skills - 2,860 yen Revised Edition: Interpreter Guide Examination - Geography - 3,520 yen The Japan Times Publishing National Interpreter Guide Examination (Geography, History, General Knowledge, Practical Skills) Perfect Preparation - 2,860 yen Total: 12,320 yen