According to recent data from ComScore, Google's site had 59 million unique visitors in the month of May. That's up 22 percent from December. EBay, meanwhile, saw slightly fewer visitors as 56.7 million unique visitors went onto EBay, up 5 percent from last December.
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EBay bidding fee = Google listing fee
EBay listing fee = Google adword fee (I think this is more accurate - MA)
A vendor pays EBay a listing fee and a final-value fee. Including other sundry fees, the total is roughly 7 percent for an item worth $100. In the same way, Google gets a fee for sending a prospective buyer to a seller. In time, as Google and other search engines understand consumer behavior better, Google might get a fee for matching a buyer and seller -- similar to EBay's final value fee, perhaps. It's likely that that higher fee will be reflected in the price-per-clicks.
For now, Google can at least boast that it's amassing a pretty good base of buyers.
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