{
  "total": 2,
  "source": "d1",
  "tracking_since": "2026-10-25T12:38:37.716Z",
  "source_rechecks": {
    "rows": 332,
    "series": 250,
    "last_checked_at": "2026-10-25T13:38:37.000Z",
    "latest_result_counts": {
      "confirmed": 240,
      "unreachable": 5,
      "needs_review": 4,
      "changed": 1
    },
    "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_20261026_5cb4794f1167",
      "series_key": "ps_025f727b9e8f02d6",
      "kind": "benchmark",
      "use_case_id": "3d-concrete-printing",
      "use_case_ids": [
        "3d-concrete-printing"
      ],
      "provider_id": null,
      "description": "Black Buffalo 3D NEXCON 1G gantry construction printer, listed price on the nextlayer equipment directory",
      "low": 938000,
      "high": 938000,
      "currency": "USD",
      "unit": "per printer",
      "region": "US",
      "source_url": "https://www.nextlayer.xyz/listing/nexcon-1g/",
      "as_of": "2026-10-25",
      "observed_at": "2026-10-26T03:32:44.654Z",
      "content_hash": "sha256:5cb4794f11672ca07658f43bedd61dfe471a2cc35d3f1383eae8cec6c00cf4e0",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 938000,
        "high": 938000,
        "note": "Already in target currency; no conversion."
      }
    },
    {
      "id": "po_20261026_ebcd2270a41f",
      "series_key": "ps_b93c7aaacc9a214f",
      "kind": "benchmark",
      "use_case_id": "3d-concrete-printing",
      "use_case_ids": [
        "3d-concrete-printing"
      ],
      "provider_id": null,
      "description": "COBOD construction 3D printers, manufacturer FAQ: pricing starts from (size, configuration and accessories extra)",
      "low": 400000,
      "high": null,
      "currency": "USD",
      "unit": "per printer",
      "region": "global",
      "source_url": "https://cobod.com/technology/3d-construction-printers/",
      "as_of": "2026-10-01",
      "observed_at": "2026-10-26T03:32:44.654Z",
      "content_hash": "sha256:ebcd2270a41fcb1e0d089982a4ea8accbc6440cd9b0af3cf39bcfcee85ebdfe2",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 400000,
        "high": null,
        "note": "Already in target currency; no conversion."
      }
    }
  ],
  "series": [
    {
      "series_key": "ps_025f727b9e8f02d6",
      "kind": "benchmark",
      "use_case_id": "3d-concrete-printing",
      "provider_id": null,
      "description": "Black Buffalo 3D NEXCON 1G gantry construction printer, listed price on the nextlayer equipment directory",
      "currency": "USD",
      "unit": "per printer",
      "region": "US",
      "source_url": "https://www.nextlayer.xyz/listing/nexcon-1g/",
      "observations": 1,
      "first_observed_at": "2026-10-26T03:32:44.654Z",
      "last_observed_at": "2026-10-26T03:32:44.654Z",
      "current": true,
      "latest": {
        "low": 938000,
        "high": 938000,
        "as_of": "2026-10-25",
        "id": "po_20261026_5cb4794f1167"
      },
      "trend": null,
      "last_rechecked": null
    },
    {
      "series_key": "ps_b93c7aaacc9a214f",
      "kind": "benchmark",
      "use_case_id": "3d-concrete-printing",
      "provider_id": null,
      "description": "COBOD construction 3D printers, manufacturer FAQ: pricing starts from (size, configuration and accessories extra)",
      "currency": "USD",
      "unit": "per printer",
      "region": "global",
      "source_url": "https://cobod.com/technology/3d-construction-printers/",
      "observations": 1,
      "first_observed_at": "2026-10-26T03:32:44.654Z",
      "last_observed_at": "2026-10-26T03:32:44.654Z",
      "current": true,
      "latest": {
        "low": 400000,
        "high": null,
        "as_of": "2026-10-01",
        "id": "po_20261026_ebcd2270a41f"
      },
      "trend": null,
      "last_rechecked": null
    }
  ],
  "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"
}