[
  {
    "ItemID": 221,
    "ExpProvide": 500,
    "CoinCost": 250
  },
  {
    "ItemID": 222,
    "ExpProvide": 2000,
    "CoinCost": 1000
  },
  {
    "ItemID": 223,
    "ExpProvide": 6000,
    "CoinCost": 3000
  }
]