Do you have any compelling evidence that the costs for OA journals is one or two orders of magnitude less than everyone claims they are? (See e.g. http://www.na

Do you have any compelling evidence that the costs for OA journals is one or two orders of magnitude less than everyone claims they are? (See e.g. http://www.nature.com/news/open-access-the-true-cost-of-science-publishing-1.12676 http://www.nature.com/news/open-access-the-true-cost-of-scie... which also shows a wide variety in publishing costs.)