This unique opportunity offers a well-diversified Amazon Kindle Direct Publishing (KDP) portfolio comprising 91 titles across various niches and languages. Established in September 2019, the business primarily focuses on children and teen books, including activity collections and educational titles, alongside profitable non-fiction works. Several flagship books boast over 500 authentic reviews and have consistently generated royalties since 2021. Operating across multiple European and US markets, the portfolio includes original content, professional-grade covers, and an e-commerce site ready for expansion. The business model operates on Amazon KDP, emphasizing print-on-demand paperbacks with additional ebook revenue across geographies like the US, Italy, Spain, France, and Germany. The company utilizes an email list of 5,000-8,000 subscribers alongside active social media profiles managed by a professional. Revenue is generated through organic searches, Amazon sponsored ads, and occasional traffic from TikTok and email campaigns, acknowledging a relatively low off-Amazon ad spend. Over the last year, the business sold around 70,242 units, generating approximately $298,295 in gross royalties, with ad spend at $122,777 and net royalties at $175,518, translating to a net margin of 59%. This lean and semi-passive business requires owner involvement averaging 4–12 hours a month, focusing on ad management and strategic decisions. Growth potential lies in scaling ad efforts, leveraging email and social media channels, and expanding product offerings into additional markets and languages. Ideal buyers are KDP publishers, content businesses keen on acquiring a cashflow-positive catalog, or individuals seeking semi-passive income opportunities in the children's publishing realm. The seller offers structured onboarding, training, and support to ensure a smooth transition.