It's much harder to trace counterfeits though.
ebay has taken away alot of info that allowed such
searches in the past. All in the name of stopping
sales off
ebay, circumventing the auction fees.
Back when you could see the names of the bidders
and auction winners, if you suspected a counterfeit,
you could discuss it with bidders that might not be
knowledgeable enough. Then they changed it to where
you could only see the winner. I think that they have
even taken that away now. When you could see the winner's
identity, you could contact them right after the auction,
and they could often check for themselves before the
transaction is complete.
Before the changes, you could even spot 'shill' bidders a
mile away. It was also easy to tell if the winning bidder
was just ingnorant, or buying counterfeits knowingly to
fence them here. If the buyer was ignorant, they would
quickly answer emails and would be obviously angry and/or
frustrated at having been duped. If the person was 'fencing',
the response would be combative, and they often 'disappeared'
from
ebay by opening a new account. Back when you could follow
these things, and the Coin Community was a good place to be, we
got together and traced several of these auctions. Now the
counterfeits are better, the info has been gutted, and other
resources have degraded to the point where you are 'on your own'.
Scary.