#List of items players won't be to put up for auction. Explained in FAQ #1 here: https://www.spigotmc.org/resources/auctiongui-1-9-support.19015/
bannedItems:
  1: #This ID has to be unique, value doesn't matter
    material: BEACON
    compareQuantity: false
    compareItemMeta: false
  2:
    material: NETHER_STAR
    quantity: 5
    name: "Example"
    compareQuantity: true
    compareItemMeta: true