Servitization and rapid technological development have made data-based services a feasible way for many manufacturing companies to increase their cash flow and support their core products. In this paper, an analytical model is presented for studying the development costs and pricing of new Internet of Things -based services for especially populations, or fleets, of industrial production equipment and machines. The model suggests the optimal price of a fleet service as a function of the life cycle of the service, the required rate of return, the size of the fleet, and the extent of economies of scale in fleet research and development. The paper contributes to the research on servitization of manufacturing, and sheds light on the different natures of service and equipment sales. Also a numerical study is presented to bring forward the managerial implications of the model.