[
  {
    "model": "iPhone 15 Pro",
    "storage": "256GB",
    "grade": "상급",
    "price": 950000,
    "price_date": "2026-10-12"
  },
  {
    "model": "iPhone 13 Pro",
    "storage": "128GB",
    "grade": "상급",
    "price": 500000,
    "price_date": "2026-10-12"
  },
  {
    "model": "iPhone 14",
    "storage": "128GB",
    "grade": "상급",
    "price": 540000,
    "price_date": "2026-10-12"
  },
  {
    "model": "Galaxy S23",
    "storage": "256GB",
    "grade": "상급",
    "price": 440000,
    "price_date": "2026-10-12"
  },
  {
    "model": "Galaxy Z Flip5",
    "storage": "256GB",
    "grade": "최상급",
    "price": 650000,
    "price_date": "2026-10-12"
  },
  {
    "model": "iPhone 15",
    "storage": "128GB",
    "grade": "최상급",
    "price": 780000,
    "price_date": "2026-10-12"
  },
  {
    "model": "iPhone 14 Pro",
    "storage": "256GB",
    "grade": "중급",
    "price": 690000,
    "price_date": "2026-10-12"
  },
  {
    "model": "Galaxy S24",
    "storage": "256GB",
    "grade": "중급",
    "price": 610000,
    "price_date": "2026-10-12"
  },
  {
    "model": "iPhone 13",
    "storage": "128GB",
    "grade": "상급",
    "price": 410000,
    "price_date": "2026-10-12"
  },
  {
    "model": "Galaxy Z Fold5",
    "storage": "512GB",
    "grade": "중급",
    "price": 980000,
    "price_date": "2026-10-12"
  },
  {
    "model": "Galaxy S23",
    "storage": "256GB",
    "grade": "하급",
    "price": 310000,
    "price_date": "2026-10-12"
  },
  {
    "model": "iPhone 12",
    "storage": "128GB",
    "grade": "하급",
    "price": 235000,
    "price_date": "2026-10-12"
  }
]