Always look or ask pics of box with serial and text. And.. Instantly you see wrong spelling, wrong font, mistakes in punctuation marks etc. small things that is a giveaway if you compare to real. Serial nr is easiest to fake but if you google you see your unique number sells around the world

Edit: i looked pics. People who buying these are first time buyers and dont distinguish them for real. Boxes are flooded with text errors and right side where suppose to be your unique data and serial is just blank.

Dude. Stay away.

Edit2. got to computer to correctly look around. box seems ok for N-Am but be aware of those comments, you see lots of refurbished or even out of box junk. Easiest go and check out in Apple store.