{
  "name": "Football Cult - football shirt price index",
  "url": "https://football-cult.com/it/estudios/indice-precios",
  "currency": "EUR",
  "license": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/",
    "attribution": "Football Cult (football-cult.com)"
  },
  "archive": {
    "from": "2026-09-03",
    "to": "2026-10-29"
  },
  "sample": {
    "shirts": 314,
    "avg_gap_pct": 11.9,
    "median_gap_pct": 9
  },
  "series": {
    "base_date": "2026-09-18",
    "last_date": "2026-10-29",
    "days": 42,
    "panel": 241,
    "points": [
      {
        "date": "2026-09-18",
        "index": 100
      },
      {
        "date": "2026-09-19",
        "index": 100
      },
      {
        "date": "2026-09-20",
        "index": 100
      },
      {
        "date": "2026-09-21",
        "index": 100
      },
      {
        "date": "2026-09-22",
        "index": 100
      },
      {
        "date": "2026-09-23",
        "index": 100
      },
      {
        "date": "2026-09-24",
        "index": 100
      },
      {
        "date": "2026-09-25",
        "index": 100
      },
      {
        "date": "2026-09-26",
        "index": 100
      },
      {
        "date": "2026-09-27",
        "index": 100
      },
      {
        "date": "2026-09-28",
        "index": 100
      },
      {
        "date": "2026-09-29",
        "index": 100
      },
      {
        "date": "2026-09-30",
        "index": 100
      },
      {
        "date": "2026-10-01",
        "index": 100
      },
      {
        "date": "2026-10-02",
        "index": 100
      },
      {
        "date": "2026-10-03",
        "index": 99.99
      },
      {
        "date": "2026-10-04",
        "index": 100
      },
      {
        "date": "2026-10-05",
        "index": 100
      },
      {
        "date": "2026-10-06",
        "index": 99.48
      },
      {
        "date": "2026-10-07",
        "index": 99.48
      },
      {
        "date": "2026-10-08",
        "index": 99.41
      },
      {
        "date": "2026-10-09",
        "index": 99.24
      },
      {
        "date": "2026-10-10",
        "index": 99.34
      },
      {
        "date": "2026-10-11",
        "index": 94.71
      },
      {
        "date": "2026-10-12",
        "index": 99.24
      },
      {
        "date": "2026-10-13",
        "index": 99.24
      },
      {
        "date": "2026-10-14",
        "index": 99.24
      },
      {
        "date": "2026-10-15",
        "index": 99.24
      },
      {
        "date": "2026-10-16",
        "index": 99.24
      },
      {
        "date": "2026-10-17",
        "index": 99.24
      },
      {
        "date": "2026-10-18",
        "index": 94.71
      },
      {
        "date": "2026-10-19",
        "index": 94.71
      },
      {
        "date": "2026-10-20",
        "index": 99.24
      },
      {
        "date": "2026-10-21",
        "index": 99.24
      },
      {
        "date": "2026-10-22",
        "index": 99.24
      },
      {
        "date": "2026-10-23",
        "index": 98.56
      },
      {
        "date": "2026-10-24",
        "index": 99.24
      },
      {
        "date": "2026-10-25",
        "index": 92.31
      },
      {
        "date": "2026-10-26",
        "index": 92.31
      },
      {
        "date": "2026-10-27",
        "index": 97.3
      },
      {
        "date": "2026-10-28",
        "index": 97.41
      },
      {
        "date": "2026-10-29",
        "index": 97.14
      }
    ],
    "closed_months": [
      {
        "month": "2026-09",
        "index": 100
      }
    ]
  },
  "by_league": [
    {
      "league": "Premier League",
      "slug": "premier-league",
      "shirts": 45,
      "avg_gap_pct": 10.8,
      "median_gap_pct": 6.8,
      "change_since_base_pct": 0
    },
    {
      "league": "Ligue 1",
      "slug": "ligue-1",
      "shirts": 36,
      "avg_gap_pct": 9.7,
      "median_gap_pct": 5.9,
      "change_since_base_pct": 0
    },
    {
      "league": "Serie A",
      "slug": "serie-a",
      "shirts": 33,
      "avg_gap_pct": 14.3,
      "median_gap_pct": 12.9,
      "change_since_base_pct": -7.86
    },
    {
      "league": "Bundesliga",
      "slug": "bundesliga",
      "shirts": 31,
      "avg_gap_pct": 13.4,
      "median_gap_pct": 10,
      "change_since_base_pct": -12.5
    },
    {
      "league": "LaLiga",
      "slug": "laliga",
      "shirts": 22,
      "avg_gap_pct": 13.4,
      "median_gap_pct": 10.1,
      "change_since_base_pct": -2.59
    },
    {
      "league": "MLS e leghe USA",
      "slug": "mls",
      "shirts": 13,
      "avg_gap_pct": 14.5,
      "median_gap_pct": 14.1,
      "change_since_base_pct": -1.8
    },
    {
      "league": "Eredivisie",
      "slug": "eredivisie",
      "shirts": 10,
      "avg_gap_pct": 14.4,
      "median_gap_pct": 14.4,
      "change_since_base_pct": -10
    },
    {
      "league": "EFL e divisioni inferiori inglesi",
      "slug": "efl",
      "shirts": 7,
      "avg_gap_pct": 5.3,
      "median_gap_pct": 5.2,
      "change_since_base_pct": null
    },
    {
      "league": "Primera División argentina",
      "slug": "liga-argentina",
      "shirts": 5,
      "avg_gap_pct": 9,
      "median_gap_pct": 7.5,
      "change_since_base_pct": null
    },
    {
      "league": "Serie B e altre categorie",
      "slug": "serie-b",
      "shirts": 5,
      "avg_gap_pct": 9.8,
      "median_gap_pct": 14.4,
      "change_since_base_pct": null
    }
  ],
  "by_brand": [
    {
      "brand": "Adidas",
      "shirts": 145,
      "avg_gap_pct": 14.7,
      "median_gap_pct": 14.1,
      "change_since_base_pct": -2.59
    },
    {
      "brand": "Puma",
      "shirts": 58,
      "avg_gap_pct": 15.2,
      "median_gap_pct": 14.4,
      "change_since_base_pct": -10.86
    },
    {
      "brand": "Macron",
      "shirts": 13,
      "avg_gap_pct": 7.5,
      "median_gap_pct": 5.3,
      "change_since_base_pct": -10.2
    },
    {
      "brand": "Nike",
      "shirts": 11,
      "avg_gap_pct": 9.1,
      "median_gap_pct": 10.5,
      "change_since_base_pct": -7.98
    },
    {
      "brand": "Kappa",
      "shirts": 10,
      "avg_gap_pct": 3.1,
      "median_gap_pct": 0.3,
      "change_since_base_pct": -1.53
    },
    {
      "brand": "Hummel",
      "shirts": 9,
      "avg_gap_pct": 3.8,
      "median_gap_pct": 5.5,
      "change_since_base_pct": 0
    },
    {
      "brand": "Other",
      "shirts": 8,
      "avg_gap_pct": 4.6,
      "median_gap_pct": 3.6,
      "change_since_base_pct": -12.5
    },
    {
      "brand": "Mizuno",
      "shirts": 8,
      "avg_gap_pct": 4.9,
      "median_gap_pct": 5.1,
      "change_since_base_pct": 0
    }
  ]
}