Email list rental prices have fallen by $6/M over October 2004, according to the Fall 2005 index from Worldata released Friday, writes DM News (via MediaBuyerPlanner). Permission-based B2B lists have remained the highest-priced lists on the market, with the average at $167/M in October, down $3/M from last year. The second priciest category - newsletters, at $175/M - actually rose $5/M since last October. Consumer magazine lists dropped $5/M, to $104/M.