This is a really good idea.
I have no idea why this won't work
Getting the error http://puu.sh/3cmBt.png on this http://pastebin.com/K6NYMiVe
MCB4 Come up with your own ideas.
This is impossible without bungeecord, lilypad-mc or assetcraft.
I have an idea how to do it, it will be ready in a couple days or less.
If you want I would be willing to make this plugin for you.
HighlifeTTU and lazertester are VERY skilled, as pasow said above, not many people here will do it for you, though I like the idea.
Yes it is not on bukkit as it is not a plugin >.< Also assetcraft is an option, though IMO bungee is better. Note: BungeeCord is not affiliated...
BungeeCord does not require spigot, I am 99% sure.
http://dev.bukkit.org/server-mods/preciousstones/ I believe this would work for you.
No, I just hadn't looked at the buycraft source, it could of had if(cmd.getName().equalsIgnoreCase("buy"))
Separate names with a comma.