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Worldata Price Index The above graph displays the straight dollar changes for November 2007. The largest price increase occurred with Attendees/Members with an increase of $4/M . Databases/Masterfiles saw the largest decrease with $11/M over the previous year, followed by Permission-Based Email Business-to-Consumers with a decrease of $6/M, and then B-to-C Magazines with a decrease of$5/M from the previous year. Straight Percent Average Dollar Change >> List Price Index: Summer 2007 | Straight Average PPM
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