Shops
Shops allow the purchasing of any item, and can be linked to mobs with the Scripting Engine.
Commands
/shop create (id) Creates a shop with an id
/shop delete (id) Deletes a shop with an id
/shop item add (id) (price) Adds an item to a shop with a price (default 0) -- must be holding an item
/shop item remove (id) (itemIndex) Removes an item from an index, starting at 0
/shop open (id) Opens a shop with an id -- displays in graphical form.
/shop meta (id) (meta) (arguments...) Sets meta on a shop.