The large science publishers are now offering electronic versions of their journals to libraries primarily as large bundles of titles, and these bundles increase in price each year at several times inflation... If one refuses to buy the whole bundle, and opts instead for individual journals, the prices of those single journal titles are greatly increased by the publisher -- so that a library is left with the choice of either buying the whole bundle or being able to afford only a limited number of journal titles from that publisher. Buying the whole bundle also places enormous strain on library budgets, leaving little funding left over to purchase the equally important journals of smaller, often not-for-profit publishers."

from librarian.net
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