Mob Spawner:
    name: "&4&lMOB_SPAWNER (page %page%)"
    size: 36
    buttons:
      goBack:
        slot: 31
      previousPage:
        slot: 30
      nextPage:
        slot: 32
      1:
        type: item
        item:
          material: 52#92
          spawner: true
          mob: COW
          name: "&dCow_spawner"
          quantity: 1
        buyPrice: 300000
        sellPrice: 0
        slot: 1