I have bought a couple of Abercombies from ebay seller, and I must say that two I have been are complete fakes. Both the material and the sagging collars show this.
Beware as pictures posted on ebay are often taken from Abercrombie's site, making you believe they are the real thing. So just looking at the picture is useless.
I had complained with the seller, who, though denied and reiterated they were originals, was willing to accept them back. This however only after threateneing action. I did not because once bought, seller was not willing to pay postage costs, nor refund money beforehand. If the seller was a scam, there was no reason to trust him