Children's workbooks, drills, etc., are sold as a set. All contents are in color. Set of 9 books: Addition, subtraction, hiragana, katakana, alphabet, vocabulary, crafts, sticker book, mini picture book The price is already much lower than the original retail price, so no price reduction is possible. I also have various other sets for sale. Individual sales and additions are also possible(^^) #cinnamonchildren's goods3196 Thank you!