"Are you tired of books that sacrifice clarity by introducing some of the complexities of economic theory too early?" Case/Fair/Oster, believe that the best way to understand how market opportunities operate and the best way to understand basic economic theory is to work through the perfectly competitive model first, including discussions of output markets, input markets (land, labor & capital), and the connections between them, before turning to noncompetitive market structures, such as monopolies and oligopolies. When students understand how a simple perfectly competitive system works, they can start thinking about how the pieces of the economy fit together. Learning perfect competition first enables students to see the power of the market system. It is impossible to discuss the efficiency of markets as well as the problems that arise from markets until students have seen how a simple, perfectly competitive market system produces good and services. Reviewers tell us that Case/Fair is one of the all-time bestselling POE texts because they trust it to be clear, thorough and complete. This well-respected author team is joined for the 9 th edition by a new co-author, Sharon Oster. Sharonrs"s research and teaching experience brings new coverage of modern topics and an applied approach to economic theory, as demonstrated in the newEconomics in Practicefeature. 0138001952 / 9780138001957 Principles of Microeconomics & MyEconLab Student Access Card & MEL Package Package consists of: 013605885X / 9780136058854 Principles of Microeconomics 0136124755 / 9780136124757 MyEconLab Student Access Code Card (for valuepack)