Richard R. Deckro
Engineering Economic Analysis
The author of the paper performs a cost-benefit analysis to determine whether to make or buy a software package. If a program is developed in house, whatever the organizational Software Department could have accomplished during the time it spent developing the system is determined. However, adoption of an off-the shelf package means that the benefits of having a "perfect" package will be lost. The opportunity cost would be an estimate of those benefits lost over the period the software packaging is to be used, minus the additional expenses involved in developing a "perfect" package.
Rivera, Fernando E., "Cost and Benefit Elements of a Tailored Application versus an
off-the-Shelf Package and the Manager's Role." (1993). Engineering and Technology Management Student Projects. 899.