These picture books were subscribed to regularly from the Challenge headquarters. I believe they were published in 2022. This series teaches words and numbers through riddles and mazes, enjoyable for children from around the age of 4 to first grade. The list price is 1080 x 12 = 12960 yen. I've roughly checked, and they are in good condition without any significant damage or stains. Please note that recycled cushioning materials and bags will be used for packaging.