The Royal Emporium is a virtual item Marketplace and allows you to trade your in game items with other players.
It is a simple trading system. Every item bought or sold comes from other players. Supply and demand for the items comes purely from players. Items can be purchased and sold using Gold Coins.
Members have eight trading slots, but free players are limited to three.
Trading is simply an offer book with no published lowest price. Trade volumes and average price are available but current prices aren't available.
Instead you simply create a buy or sell offer specifying the quantity and the price you're willing to buy or sell at. This method helps stop perpetual lowering of prices by traders setting their price 1 Gold less than the current price.
Offers are fulfilled on a first come, first served basis and the system ensures you are given the best price available.
Here's an example of 4 players trading a sword. 2 are selling and 2 are buying. The offer book has the following offers, 1 from each of the players.
The sellers are selling too high for their offers to get matched which is why the offers are still on the offer book.
Now a 5th player decides they really want the sword and are willing to spend up to 100 Gold. They put in a buy offer for 100 Gold and the system immediately matches it with the lowest sell offer available.
In this case, it's matched with the Sell offer at 38 Gold and 62 Gold is returned to the 5th player. So they got the best deal available at the time they placed their offer and the extra was returned.
Now the offer book looks like this:
Another player wants to sell quickly and they decide to put in a Sell offer for 30 Gold. The system matches to the highest buy offer (36 Gold) and the player receives 36 Gold for their sword.
Now the Offer book looks like:
Offers are fulfilled oldest to newest. If there's a sword with a Buy offer for 36 Gold and another player puts another buy offer for 36 Gold, the first player's order will be fulfilled first because they were first on the offer book.