Over the past week, I have referred to only six articles behind paywalls (from five publishers or distributors), but the per-page cost of two of these is particularly egregious.
|2010.06.14||"Vocal tract and register changes analysed by real-time MRI in male professional singers—a pilot study," Logopedics Phoniatrics Vocology (7 pages)||Informaworld||$83.68 (€69.00)|
|"Coding of facial expressions of pain in the laboratory mouse," Nature Methods||Nature Publishing Group||$32.00|
|"Window of Opportunity? Adolescence, Music, and Algebra," Journal of Adolescent Research||Sage Journals Online||$25.00|
|2010.06.15||"The Neuropeptide Oxytocin Regulates Parochial Altruism in Intergroup Conflict Among Humans," Science||AAAS||$15.00|
|"Courtship compliance: the effect of touch on women's behavior," Social Influence||Informaworld||$30.00|
|2010.06.18||Review of Carl Zimmer, The Tangled Bank, in Evolution (3 pages)||Wiley Interscience||$29.95|
|Cumulative Total (30 articles):||$808.93|
The mean price for these six articles is $35.94. This is the highest mean so far, by several dollars (the previous high was $28.74, the mean price for the articles in the period 28 May to 5 June), but the mean this week is obviously skewed by the absurd price of the "Vocal tract" article.
The mean price for all 30 Closed Access articles that I have referred to since 28 May is $26.96. The median price is $29.95.
The price per page of the "Vocal tract" article is $11.95. The price per page of the review in Evolution is only slightly lower, at $9.98.
On the bright side, I have been able to refer to (and download) several Open Access articles during the past week; see particularly the Daily Digest for 16 June, where I refer to 4 Open-Access articles, and to none behind paywalls.