Buying coins on Ebay?

Has there been much selling of fake ancient coins on Ebay? I mean, how can
buyers tell what they are getting? As far as the positive feedback, I
assume most of the buyers would not know a fake from a real coin to begin
with. So, the positive feedback is a bunch of bull. Not a good way to
judge material.

Also, many buyers are reluctant to give negative feedback so instead you
will see a lot of "OK" or "Good" with a positive rating when the buyer is
really feeling negative. They don't give negative because they don't want
to receive a negative rating from the seller.

Where is the best, cheapest, trustworthy place to buy ancient coins?

Jimmy