Agreements made on trades are expected to be met. If the agreements on trades are not met for any reason with malicious intent, the scammer in question will be suspended.
Similarly, if items are put on public sale with obvious malicious intent, the seller in question will be met with similar repercussions.
Examples include, but are not limited to:
-Agreeing upon a certain trade of items and then switching out the agreed upon item with another item, hoping that the victim will not notice the switch
-Selling an item on the Open Market with obviously deceiving prices. I.E. an item is clearly worth 100 gold, but it is put up for sale for 10000 gold hoping for inattentive players to purchase it.