Every online search, subscription, and social media login carries a cost that rarely appears on any invoice. Every online search, subscription, and social media login carries a cost that rarely appears on any invoice. This book examines the less visible price of digital convenience, from the money quietly spent on data storage and targeted advertising to the personal information collected in exchange for free services and the hours absorbed by apps designed to hold your attention. Generated by artificial intelligence, this book draws on publicly available research and reporting to give you a clear, organized account of how these costs accumulate over time. You will learn how digital services are financed, what happens to your personal data, and why time spent online often exceeds what you intend. The book does not offer alarmist warnings but instead provides a grounded introduction to a subject that touches nearly every aspect of modern life. Every online search, subscription, and social media login carries a cost that rarely appears on any invoice. This book examines the less visible price of digital convenience, from the money quietly spent on data storage and targeted advertising to the personal information collected in exchange for free services and the hours absorbed by apps designed to hold your attention. Generated by artificial intelligence, this book draws on publicly available research and reporting to give you a clear, organized account of how these costs accumulate over time. You will learn how digital services are financed, what happens to your personal data, and why time spent online often exceeds what you intend. The book does not offer alarmist warnings but instead provides a grounded introduction to a subject that touches nearly every aspect of modern life.