I bought mine from this shop:
Website looked authentic to me and I thought they were located in France so I bought it there (€109). Well turned out they were fake, so put this one on the black list.
my off specific topic question is, is there any headphone/amp gear on ebay that is legit?
Come on now, do you have to ask something like that? There are probably hundreds of thousands of audio gear vendors on ebay. Some good, some bad. You can't possibly think ALL of them are bad, do you?
Look at the price of the item, look at the seller's feedback, look at the pictures closely, etc. Use some common sense. If something is "too good to be true" than it probably is.
If you are so worried about fake stuff on ebay, why even bother with Ebay when I (and others above me) have listed legitimate distributor sites to buy from?
Seller is located in Hong Kong, don't bet on it being real.