I bought this at the regular price and read it in the last few months, so it's fairly recent. However, I noticed there are several folded pages. Please consider this if you understand. I don't think there are any stains on the inside. "The Happiest Kids in the World: How Dutch Parents Foster Autonomy and Well-being in Their Children" Rina Mae Acosta / Michele Hutchison / Makiko Yoshimi-Hofstra Price: ¥900 #RinaMaeAcosta #MicheleHutchison #MakikoYoshimiHofstra #book #society/education-learning