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    {
      "buyer": "first buyer ",
      "date": "2026-05-15",
      "is_final_sale": true,
      "price_per_kg": 725.0,
      "quantity": 956,
      "total_price": 1629510.0,
      "total_weight_kg": 2247.6
    }
  ],
  "summary": {
    "cost_per_bird": 1335.83,
    "feed_consumed_kg": 3264.0099999999998,
    "feed_purchased_kg": 3350.0,
    "feed_remaining_kg": 85.99000000000024,
    "profit": 293676.8999999999,
    "profit_per_kg": 130.66,
    "roi_percent": 21.98,
    "total_cost": 1335833.1,
    "total_revenue": 1629510.0
  }
}