Finally, these costs have to be weighed up against the expected revenue and other positive spin-offs, which are also difficult to quantify. In many instances, the revenue stream remains long after the event is held, but so does the financing of the costs.
Numerous studies have been commissioned in various countries to determine the economic and financial implications of hosting mega events See Bohlmann H R: Predicting the Economic Impact of the 2010 FIFA World Cup on South Africa. May, 2005. University of Pretoria. Working paper 2006-11, for a review of these studies.