As a reminder, when in merchant mode, the following is forbidden:
- Placing several of your characters in merchant mode on the same map (outside of marketplaces)
- Selling an item at an excessive price in order to keep an advantageous location
- Obstructing access to an NPC by placing yourself in such a way that other players cannot interact with them
If you observe this kind of behavior, please contact the in-game moderation team directly. Only they can note the offense and do something about it.