"The letter (PDF) was written by Theodore Bergstrom (University of California - Santa Barbara) and R. Preston McAfee (California Institute of Technology)."

"website that lists the price per article and the price per citation for about 5,000 academic journals. Using these statistics, we have constructed an index of costliness for each journal in each of several broadly defined disciplinary areas"...created by UCSB and CalTech...see this article http://www.hss.caltech.edu/%7Emcafee/Journal/OpenLetter.pdf