The market allows trading in exchange for gold. Much like in real life, raw materials are traded in bulks, for a unit price. Different goods have different exchange rates, and the market will always set a higher price for making them available than in the case of buying up. When selling, the size of a bulk depends on how much of a particular resource is available for selling.
In order for a transaction to be completed, there must be enough space in the storage area (when buying), or enough products (when selling). Cargo issues can be solved by extending the storage area, or by selling other products in order to make some room.
The market has unlimited stock of all materials. The availbility of goods can vary however from mission to mission, at which point they cannot be bought or sold. Skirmish games always provide full access to goods.
The market becomes a very crucial building for defense, as its presence allows the player to access finite resources, even when they are no more on the map (i.e. wood and meat). It is very cheap to replace, but it costs wood - always leave some in the stockpile for dire situations.
- In non-skirmish games, the market starts out unmanned. Sometimes, a merchant comes with a trading horse and populates the market, advertising his stock. This is purely cosmetic and the market is usable at all times, even when the merchant is not present.