Ethernet switches form the backbone of digital systems in public transport vehicles. When it comes to their acquisition, several criteria have to be taken into account. While functionality and costs are typically the focus of such considerations, looking at them from a Total Cost of Ownership (TCO) perspective provides further interesting clues. The holistic TCO approach provides answers to questions such as: Does a low price really mean a low cost? Does quality really cost more? What is the difference between costly and cost-efficient?