OnlyShopGUI allows you to create admin shop with GUI like chest inventory. Requires Vault!

Features:
Configurable durability, price and amount Discounts for VIP Items for VIP only Click sound when select item to buy Up to 54 slots (6 lines)

Commands:
/shop - open shop GUI /shop reload - reload shop config

Permissions:
onlyshop.vip - ability to use discounts and buy uncommon items onlyshop.reload - ability to reload plugin configuration

Configuration info:
shop-lines: 3 # Number of shop GUI lines. Maximum is 6 (54 slots)
fill-empty: true # Put items in free inventory slot instead of adding items to existing stack
'INK_SACK-3': # ItemName-Durability (-durability is optional)
  amount: 2 # Amount of items to add to player inventory when buy
  price: 8 # How money take from player for this item
  discount: 30 # It give 30% discount to VIP (-1 if you want make item for VIP only)

Configuration example:
shop-lines: 6
fill-empty: true
  goodies:
    'DIAMOND':
      amount: 1
      price: 100
      discount: 50
    'SPAWN_EGG-50':
      amount: 1
      price: 80
      discount: -1

Sources on GitHub (old)