Gamersfactory.com review: Fraudulent seller

The website www.gamersfactory.com offered to sell and buy video games. I decided to buy my game and contacted the seller. We agreed about the price and I sent the game. But the seller stated that he didn’t receive it, and therefore he couldn’t send me the check. It was several months ago, and he continued to state that he received nothing. I wonder if there are other people, who had the same experience. Can you provide any good piece of advice?