I was at a store the other day and they were selling FAKE studded MNE A's for $150. And I told the salesgirl that it was fake (so obvious, the numbers on the yellow tag were stitched on, sticker was all wrong, gross wash, horrible color) and she was like, "Well we went to a training day so we could tell apart fake jeans from real ones... They said the company changes around stuff all the time so their jeans can't be copied."
I felt like a total snob (even though I was SUPER nice and apologetic about it) and she took it well, the jeans were removed from the shelf and she said she'd check with her manager later.
After being here I think it's funny how we get to be so good at telling apart reals from fake, and also get really annoyed at the people who trot around with fakes (both selling /wearing knowingly and also the poor people who wear fakes and don't know it). I know a girl with fake gold crystal NYDs and I wish I could tell her but I don't know how to even approach the subject...
Sorry for the derail OP... You did the right thing, and everyone else was stupid for not listening. At least you have the guts to say something!