No kidding. If I had a nickel for every fake pair of Oakleys I saw at a flea market, I'd be able to buy a REAL pair of Oakleys.
Nobody should be buying high priced ANYTHING from Ebay anyway. I've already learned my lesson in spades with that. Feedback or not, it's really hard to get any real kind of feel on whether what you are being sent is either completely operational or authentic. Sometimes you can't even blame the sellers, as they are commonly just re-selling items they get from someplace else.