※※No price reduction planned※※ This is a set of 9 books of Sato Publishing's "Soroban Drill" (0-8) + 1 answer book. The answer book has been used a little, but the others are new and unused. Problem books (B5 size, 32 pages each) 0: Start (Beginner) 1: Basics of 10th Kyu 2: Basics of 9th Kyu 3: Basics of 8th Kyu 4: Basics of 7th Kyu 5: Basics of 6th Kyu 6: Basics of 5th Kyu 7: Basics of 4th Kyu 8: Basics of 3rd Kyu (1) Complete Answer Book (B5 size, 32 pages) Direct purchase without comments or messages is welcome. Thank you.