Economy minecraft server suggestions?

Looking for a multiplayer server that involves money and buying things somehow, got bored of the single player. Any fun servers you guys play on?

You can look for a bunch of Minecraft servers at
http://www.planetminecraft.com/...s/servers/
http://minecraft-server-list.com/

and a whole bunch of other server list websites. You can narrow down your search to find exactly what you're looking for! Hopefully you'll find the server right for you.