Lorrie Norrington, president of eBay's global marketplaces business, has been telling BusinessWeek about a sea change in eBay's pricing structure. Calling it "the biggest, most fundamental change we have made," Norrington has told BW that eBay will today announce plans to reduce the upfront fees it charges to list sale items - source of up to 60% of its revenues till now - while increasing its final sales commission to make up for the reductions, which in some cases will be by as much as 75%.