This Amazon KDP publishing portfolio in the US medical and test preparation niches is a profitable venture, comprising seven active books. Generating $30.5K in revenue and $15K in net profit over a trailing twelve-month period, the business exhibits approximately a 49% net margin. Launched in 2025, it has demonstrated substantial growth, particularly with $20.5K in revenue and $8.7K in net profit in the first half of 2026. The revenue, split evenly between organic Amazon traffic and Amazon Ads, provides a solid foundation and proven paid acquisition channel. The operational structure is efficient, requiring only three hours of management weekly, focusing primarily on optimizing Amazon Ads campaigns. The business utilizes Amazon's infrastructure for fulfilment, thus eliminating inventory, team, and supplier costs. Books in the portfolio were developed following detailed market research, addressing niches with demand for practical educational resources. The venture is not overly reliant on the founder, with automation in sales and minimal managerial duties. Growth opportunities for a buyer include launching additional books, expanding successful titles, optimizing ad campaigns, and improving book listings and organic rankings. The current owner plans to sell to focus on new projects. Post-sale, the seller offers 30 days of support, assisting with the transition, advertising strategies, and operational insights. This transition support aims to enable the buyer to maintain and potentially grow the business efficiently.