For those of you who do not know the Lebron 2k14s won't ship until late April/early May. The rumors that they are shipping within the next few weeks are not true.
Yes, they are real.
It is very safe to buy through paypal, due to the fact that paypal sides with the buyer 1000% of the time. If the buyer files a dispute claiming they did not receive what they paid for, paypal will give a refund almost indefinitely. I would not worry about getting scammed...