Most eBay sellers are honest IMO though many are clueless about cameras.
Many camera-clueless sellers are not aware of the importance of the condition
of a camera and couldn't determine the condition even if they are. They find
a camera cheap, have no clue as to its working condition and "research its
value" by searching on eBay for the highest price that model recently sold
for. This, they think, is its value and that's what they list it at. Some even
more clueless sellers just look for the highest asking prices of similar cameras
regardless of whether or not they sold at that price and this, they think, is
its value. Since they have no clue if the camera works nor what camera
buyers look for and care about, their prices are unrealistic. And, because
many of them end up getting returns on their cameras they list them as
"sold as is, no returns."
At a recent swap meet I saw a 4x5 Graphic View rail camera in shabby
condition with a so-so lens and nonworking shutter. The seller was
asking $375 for it. He said "our research indicates the camera is worth
$450 so this is a bargain." When I got home I searched eBay and found
one mint condition Graphic View outfit with 2 nice, working lenses (wide and
normal) at an asking price of $450. It was the highest asking price for
that camera on eBay at that moment so I suspect the swap meet seller
saw the same listing and that was his "research" -- he saw one camera
with the same model name at that price so he figured that's what it was
worth even though his camera was unusable without a shutter repair which
he was unaware of. And, if I tried to explain it to him I'd probably just make
him angry.
These guys go to estate sales and yard sales and buy up cameras if they're
cheap. Then they "research their value" by looking them up on eBay. They
have no clue if the camera works, if the lens is full of fungus or anything
else about its condition.
Often times they eventually give up selling cameras because of all the returns
and angry buyers but some other goofball comes along to take their place
and does the same thing.
There are lots of camera bargains available on eBay, you just have to
determine if the seller is or isn't knowledgeable about what he's selling
and bid (or don't bid) accordingly.