{
  "total": 2,
  "source": "d1",
  "tracking_since": "2026-10-25T12:38:37.716Z",
  "source_rechecks": {
    "rows": 1117,
    "series": 752,
    "last_checked_at": "2026-10-27T07:49:20.000Z",
    "latest_result_counts": {
      "confirmed": 706,
      "changed": 5,
      "unreachable": 21,
      "needs_review": 2,
      "partial": 7,
      "not_found_on_page": 11
    },
    "method": "Each source URL is fetched and the recorded numbers are looked for in the page (PDFs via pdftotext); anything not confirmed is reviewed by a human. Log: /downloads/price_rechecks.jsonl"
  },
  "observations": [
    {
      "id": "po_20261025_2715e30e5596",
      "series_key": "ps_299b72d23a69406b",
      "kind": "benchmark",
      "use_case_id": "aerial-advertising-drone",
      "use_case_ids": [
        "aerial-advertising-drone"
      ],
      "provider_id": null,
      "description": "Single-drone trailing banner campaign, reported US range (American Guerrilla Marketing guide, secondary source)",
      "low": 300,
      "high": 1500,
      "currency": "USD",
      "unit": "per flight hour",
      "region": "US",
      "source_url": "https://americanguerrillamarketing.com/articles/the-power-of-drones-for-advertising-new-heights-marketing/",
      "as_of": "2026-10-25",
      "observed_at": "2026-10-25T19:43:25.629Z",
      "content_hash": "sha256:2715e30e559656ce84d089e7f51f121253f9a67f682fcffd17422fc982437db1",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 300,
        "high": 1500,
        "note": "Already in target currency; no conversion."
      }
    },
    {
      "id": "po_20261025_9745310cc01f",
      "series_key": "ps_7b8cc6f0103fd6a4",
      "kind": "benchmark",
      "use_case_id": "aerial-advertising-drone",
      "use_case_ids": [
        "aerial-advertising-drone"
      ],
      "provider_id": null,
      "description": "Static drone banner display flight, half day, provider already holding a suitable operating authorisation, excl. VAT (C-DRONE guide, observed 2026 range)",
      "low": 800,
      "high": 2000,
      "currency": "EUR",
      "unit": "per half day",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/advertising-drone-banner-france-regulation-price/",
      "as_of": "2026-09-22",
      "observed_at": "2026-10-25T19:43:25.629Z",
      "content_hash": "sha256:9745310cc01fdf328365adeb72ae758e4e90e84b503baddd478dbbb5b7a2276e",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 895,
        "high": 2238,
        "fx": {
          "pair": "EUR/USD",
          "rate": 1.11881,
          "eur_per_usd": 0.89381,
          "rate_date": "2026-10-26",
          "source": "European Central Bank reference rates via Frankfurter",
          "source_url": "https://api.frankfurter.dev/v1/latest?base=USD"
        },
        "note": "Converted at the published reference rate on 2026-10-26, not at the price's as_of date. Indicative only."
      }
    }
  ],
  "series": [
    {
      "series_key": "ps_299b72d23a69406b",
      "kind": "benchmark",
      "use_case_id": "aerial-advertising-drone",
      "provider_id": null,
      "description": "Single-drone trailing banner campaign, reported US range (American Guerrilla Marketing guide, secondary source)",
      "currency": "USD",
      "unit": "per flight hour",
      "region": "US",
      "source_url": "https://americanguerrillamarketing.com/articles/the-power-of-drones-for-advertising-new-heights-marketing/",
      "observations": 1,
      "first_observed_at": "2026-10-25T19:43:25.629Z",
      "last_observed_at": "2026-10-25T19:43:25.629Z",
      "current": true,
      "latest": {
        "low": 300,
        "high": 1500,
        "as_of": "2026-10-25",
        "id": "po_20261025_2715e30e5596"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-27T01:26:25.942Z",
        "result": "confirmed",
        "by": "automatic"
      }
    },
    {
      "series_key": "ps_7b8cc6f0103fd6a4",
      "kind": "benchmark",
      "use_case_id": "aerial-advertising-drone",
      "provider_id": null,
      "description": "Static drone banner display flight, half day, provider already holding a suitable operating authorisation, excl. VAT (C-DRONE guide, observed 2026 range)",
      "currency": "EUR",
      "unit": "per half day",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/advertising-drone-banner-france-regulation-price/",
      "observations": 1,
      "first_observed_at": "2026-10-25T19:43:25.629Z",
      "last_observed_at": "2026-10-25T19:43:25.629Z",
      "current": true,
      "latest": {
        "low": 800,
        "high": 2000,
        "as_of": "2026-09-22",
        "id": "po_20261025_9745310cc01f"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-27T01:26:25.942Z",
        "result": "confirmed",
        "by": "automatic"
      }
    }
  ],
  "note": "Only one observation per series so far: we started recording every price on 2026-10-25 and re-check every source on a schedule. A trend appears when a re-checked source shows a different price (we never overwrite old observations).",
  "pagination": {
    "total": 2,
    "limit": 200,
    "offset": 0,
    "returned": 2,
    "next_offset": null,
    "next": null,
    "prev": null
  },
  "license": "Whirrwork (https://whirrwork.com), CC BY 4.0"
}