This document summarizes Duke University's experience with an e-book approval plan. It provides statistics on the number and cost of e-books acquired, top subject areas, and discusses workflows and discovery methods. Some key findings are that 21% of books acquired were e-books costing an average of $88 each, the top subject areas were English literature, public policy, and economics, and improving the cataloging and activation of new e-book titles in discovery services was an area for improvement.