This has been talked about before how people are willing to scam especially around the holidays. If it is too good to be true than it probably is a fake. Check the specs listed vs what is reported via various forums. And look at the picture posted if any thing looks off leave it be.
GT N7100 Note II Android 4 0 5 3inch Black ATT T Mobile Straightalk Sim | eBay
Fake Note 2 - xda-developers