{
  "generated": "2026-09-11T11:12:54.722Z",
  "reference_as_of": "2026-09-11",
  "datasets": [
    {
      "id": "grading-scales",
      "rows": 22,
      "as_of": "2026-09-11",
      "changes": "when a grading company revises its published scale"
    },
    {
      "id": "graders",
      "rows": 5,
      "as_of": "2026-09-11",
      "changes": "rarely; on a new entrant or a change of scale"
    },
    {
      "id": "eras",
      "rows": 9,
      "as_of": "2026-09-11",
      "changes": "rarely; era boundaries are conventions"
    },
    {
      "id": "card-reference",
      "rows": 13,
      "as_of": "2026-09-11",
      "changes": "when a league changes its rookie designation"
    },
    {
      "id": "selling-routes",
      "rows": 12,
      "as_of": "2026-09-11",
      "changes": "whenever a marketplace revises its fees — treat every percentage as a starting value"
    },
    {
      "id": "cpi",
      "rows": 113,
      "as_of": "2026-09-11",
      "changes": "annually, when BLS publishes the new annual average"
    },
    {
      "id": "product",
      "rows": 24,
      "as_of": "2026-09-11",
      "changes": "when a tool is added or the app changes"
    }
  ],
  "licence": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/",
    "attribution": "Sports Card Radar (https://sportscardradar.com)",
    "note": "Reuse any of this, including commercially, with a link back to the page or endpoint it came from."
  }
}