We attempted to find a hard definition of what TCO really does address in terms of analysis. We looked into a number of commercial products to gain that definition, and intended to input data to detect potential differences between the results. Almost from the start we saw that all commercial models require different types of input data, and all have their own spin on TCO. Subsequently, we decided to define the type of data we thought would be suitable for TCO and built a simple representative spreadsheet analysis. For benchmark comparison we generated a standard financial model.
Cavaro, D.; Gerdsri, N.; Gibbons, B.; Iewwongcharoen, B.; and Patankul, P., "Total Cost of Ownership (TCO)" (1998). Engineering and Technology Management Student Projects. 2008.