This paper provides information on the cost of the research underlying the Minicourse model as compared with the development cost of the Minicourse packages. It also estimates the cost that would be involved in achieving 30 percent implementation of Minicourses by elementary and secondary school teachers in the United States. Research costs are estimated on the basis of 11 projects (listed in an appendix) which formed the direct foundation for the development work. Development costs are estimated on the basis of an average of current figures for Minicourses 2, 3, 5, and 8. (An appendix lists the costs of each of the four broken down by the major steps in the development process.) Dissemination and implementation costs are also estimated, mainly on the basis of material and personnel costs. A summary of costs arrives at a figure of $45 for the average cost of one course for one teacher. (RT)