William Walsh has put together a table of Subscription Costs for Elsevier Hybrid Journals. While Elsevier has promised to reduce subscription costs based on author payments, the average cost increase for Elsevier hybrid journals (6.39%) is higher than that for Elsevier journals overall (5.5%).
Thanks to William, and to Peter Suber on Open Access News for the alert and comments.
To me, this illustrates well why librarians should be involved in coordinating author processing fee charges (regardless of whether these are paid by funding agencies, departments, or the libraries). It is only when the two forms of payment (subscriptions and article processing fees) are brought together, that the payee is in a good position to understand what is happening, and effectively negotiate the best solution.
Any opinion expressed in this post is that of the author alone, and does not reflect the opinion or policy of BC Electronic Library Network or Simon Fraser University Library.