Open Access can offer universities real cost saving benefits, claims Alma Swan in a report – 'Modelling Scholarly Communication Options: Costs and Benefits for Univeresities', published in February 2010 (download here: http://ie-repository.jisc.ac.uk/442/). Swan claims that the move to Open Access can 'disrupt systems and processes that have been in place for a very long time' …
A Mon, study studied this question.