maybe we should have a bit of stock things and whatever so maybe stock exchange is good, here is the link
http://forums.bukkit.org/threads/econ-rpg-misc-stockexchange-v1-5-trade-fictional-stocks-permissions-860.21016/
http://forums.bukkit.org/threads/econ-rpg-misc-stockexchange-v1-5-trade-fictional-stocks-permissions-860.21016/