This book sets out the foundation of Post Keynesian price theory by developing an empirically grounded pricing model and production schema. The administered, normal cost, and mark up price doctrines are explained in parts I±III of the book, as many of their theoretical arguments are important for developing the subsequent foundation. The work of Gardiner Means, Philip Andrews, and Michal Kalecki is discussed, as well as that of the developers of the doctrines such as Edwin Nourse, Paolo Sylos Labini, Harry Edwards, Josef Steindl, and Alfred Eichner. Drawing upon the arguments and formal modeling offered by the doctrines in conjunction with empirical evidence from 100 studies on pricing and production, an empirically grounded pricing model and production schema are developed; it is then argued that the model and the schema together constitute the foundation for Post Keynesian price theory.