they probably "fell off the truck"
around me there is some swamp meet type thing on Fridays that is full of knock off stuff from coach purses to NFL jerseys. I bought a jersey last year (yeah, im not going to spend $200 on a jersey) and I took it to two sporting good stores and both said it was real.
I went back to buy one for a friend for his birthday and the guy said "they fell off the truck if you know what I mean"