In human-robot collaboration (HRC), in which the employee works next to the robot - as is often the case in the previously purely manual assembly - the cost effectiveness of HRC application is often difficult to represent. Therefore, in the design of HRC applications, the focus in the first planning phase is on ensuring economic efficiency. In the ROKOKO research project, the involved partners developed a simple method for estimating the required total investment. The planning of a HRC application case at the company Metabowerke GmbH using the new method is the subject of this article.