I am trying to make a website which provides a service to buy and sell virtual items. For example: If someone playing World of Warcraft and wants to sell 100 gold (in game currency) for real money. He would post it on my website. A buyer will buy it from seller and I take a cut. My question is, what is the best way for me to handle this situation so the buyer will not dispute it and get a charge back. I don't want to use a service like escrow. Thanks.