Bukkit

Very simple-to-use shop system : deal materials stored in chests without commands / signs

RpgEssentials

A pretty simple shop plugin. No signs required. Supports DoubleChests and claim protections!

Coins

ServerShop-gui

QuickShop NotLikeMe

ItemFrame Shop for Minecraft.

Command-Based Global shop with additional shop interfaces

Gem Scoreboard

Lightweight Essentials! useful commands and features for Minecraft! [Lightweight Essentials]

Probably the best and the easiest [Player] & [Admin] chest shop plugin in the entire Minecraft history

Create profession and give them some skills !

Currency plugin designed to be "nothing extra".

Allows blocks a chance to respawn increasing resources per chunk.

An extremely efficient way of economic balancing, allowing poorer players to have a chance to earn.

The gMoney is a plugin for economy, use Vault API or No

Allows players to buy and sell base items at prices automatically determined by market demand.

Customize villager trade lists for fun, profit, or a more balanced economy.

The ultimate questing plugin

Create hotels and rent out rooms to other players