If I'm using Ebay I tend to shop from the ebay accounts that are run by credible retailers instead of just random individuals pulling junk out of their garage. Been a pretty good experience so far.
Same here if there is a crook selling on Main st don't shop there.
E-bay has thousands of people selling & trying to lump them all together
is foolish.
It's my hard earned money so I write the seller asking questions like.
How much brass is showing?
Is there any fungus?
Is there any oil on the Aperture?
Is it in complete working order?
Now if you list it as EX & it does not meet
my questions, I get my money back quick 100%.
I have shopped E-Bay for years, & have never
been disappointed yet. Unless you count the time
I ordered a Camera shutter release from CHINA

ABC.
My shipment got lost in the USPS. I got my money
back the same day I wrote my e-mail to the seller.