I came up with this idea on how to transfer funds through steam wallet. So let's say you want to sell a unusual hat but you want steam money. Well one simple trick is to post a trade, explain the details, and have them buy a cheap crate(or other cheap item). Once you get the item sold you then send a trade to the person and give them our unusual hat. Or you give it first and then they give you the steam funds for your crate. It depends on how much rep(probably paypal rep) the other person has. Very risky, I know. However, is there a rule against it?