The issues discussed in this paper refer to the contemporary role of services in the knowledge-based economy. The author identifies the fields of services that currently constitute the so-called economy development carriers and names them knowledge-based services. Educational, research, and information and communication, as well as business services are particularly significant in this group of services. Despite the diversity of the enumerated services between industries, their common feature is offering customers the basic value in the form of professional knowledge based on the intellectual capital of individual service organisations. The author, relying on the concept of customer value management as a process, discusses the significance of marketing at four successive stages of the process and exhibits unique values offered to the customers who purchase knowledge-based services.