Creaser C, Whate S. Trends in journal prices: an analysis of selected journals, 2000-2006. Learned Publishing 2008;21:214-224.
Examines overall price, price per page, and price per point of impact factor for institutional subscriptions for biomedical and social science journals for 11 publishers. Prices, and rates of increase, vary considerably. There is some evidence that not-for-profit publishers may, on average, offer better value for money I terms of price per page and price per point of impact factor.