Development Economics is aimed at the upper level undergraduate, graduate marketing for economic development and international trade courses. Almost every school offers the course each semester and the only prerequisite is introductory economics (so this is not a heavy duty research course). The total market in the US is estimated around 40,000 students per year with an average of 45 students per class.
Development Economics offers several competitive advantages that will easily set it apart. Firstly, it is more analytical than the competition which reviewers think will capture the upper level of the market which happens to be where the larger enrolments are. Secondly, it will contain the most comprehensive citations of recent literature, a major weakness with the competition. Thirdly, it has an abundance of Japanese examples which provide a global distinction. Finally, the reviewers felt that it was well written and ready to go as it is.