QuickShop allows the creation of chest (or barrel) shops that sell items in exchange for money. You can also produce shops that can buy items. This is the primary way to exchange money earned from the Jobs plugin for items, and is the core of the player-driven economy.
You can create shops by left clicking a chest with an item, then typing how much you want to sell it for. You can convert shops into buying shops with /qs buy. You can also consider trading items using Movecraft between cities -- it's possible that items may sell for less in one nation and more in another.
If you are purchasing an item with customized information such as an enchanted book or an enchanted tool, you can left click on the shop first to check its enchantments or other qualities.Â
Quickshop Area at the player township of Lindon, Owned by Commando989