Aside from the Auction system the face to face trading system allows players to exchange items and coin in real time for no fee.
Initiating a trade
A player wishing to trade with another can initiate with the /trade command or by double clicking their target's avatar.
The Trade GUI
The trade gui allows players to 'drop' coin and items into their side of the window and see what the other player is offering. It also allows them to inspect the items on offer.
Once happy the players may both click Trade to complete the trade or click cancel to reject the offer.