Here is a nice new shop system for players that is much simpler and more versatile the the old sign shop system. These shops allow you to sell multiple items within one sign and even allows you to easily sell enchanted and lore'd items!
To get started place a blank sign. Then type /scs create Now you will see the empty shop inventory, simply drag the items you wish to sell from your inventory into the shop.
Until you set a price the items will be listed as display only.
/scs <price/free/display> (ex. /scs price 1000) Target your shop, execute this command, then click the item to price it.
/scs edit Changes the shop contents. Target the sign and execute this command.
/scs setmode <buy/sell> Sets the mode of your shop.
/scs storage Target your shcop and execute this command to view your shop inventory.
/scs settitle <title> Sets your shop title.
/scs break Removes your shop. Be sure to remove all items first with /scs edit or you will lose them upon breaking your shop!
Hope you like it, this has been one of the more helpful admin plugins for a long time and we are finally able to enable player use. Enjoy!