How many Ebay sellers are there?
Tens of millions.
In its January 26, 2010 press release, Ebay reported having ‘Å“90 million active buyers and sellers’. Although there is no number available for auction-style sellers, its 2008 Annual Report says that there are 516,000 fixed-price sellers on Ebay online storefronts. It is safe to assume, therefore, that the number of Ebay sellers may go very well into the tens of millions worldwide.