I have bought a few games from many of these online websites however a few of them were scams, short and simple. When buying NBA 2K16 I was very cautious as I subconsciously thought this was a scam and people told me not to buy the game however the seller was very quick in emailing me and responded to my email in a short period of time. I now have the game for possibly the best price you'll find anywhere and the game is fully functional.
Thanks