{
  "product": {
    "title": "Koleston Hair Color Twilight Medium Brown + Developer 304/15",
    "titleAr": "كولستون سوبريم صبغة شعر بني متوسط ساحر + مظهر 304/15",
    "titleEn": "Koleston Hair Color Twilight Medium Brown + Developer 304/15",
    "url": "https://www.nahdionline.com/en-sa/koleston-hair-color-twilight-medium-brown-developer-30415/pdp/103622902",
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    "region": null,
    "lastSeenAt": "2026-11-11T14:12:00.279Z"
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    "sinceDays": 3.3,
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  "windowDays": 90,
  "observedDaysBeforeCurrent": 42.3,
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  "realDiscountPct": 4,
  "hikeBeforeSale": false,
  "verdict": "less_than_claimed",
  "note": "Listed 'before' price 26.5 . Its usual price over the last 90 observed days was 13.47; today's 12.95 is 4% below that.",
  "signals": {
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    "observedDays30d": 0,
    "realDiscountVs30dLowPct": null,
    "wasAbove30dLow": null,
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    "saleDaysOutsideSeasons": 10.9,
    "season": null,
    "longSale": false,
    "promo": null
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  "facts": {
    "since": "2026-11-08T07:18:05.588Z",
    "low30": 10,
    "low30Since": "2026-10-06T11:02:48.132Z",
    "low90": 10,
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    "cheapest": {
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      "domain": "www.nahdionline.com",
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      "price": 12.95
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        "days": 29.3,
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        "lowAt": "2026-10-10T23:26:23.857Z",
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        "high": 13.47,
        "days": 45.6,
        "vsAvgPct": -1
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    "guidance": "normal"
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    {
      "key": "discounts-2026",
      "name_ar": "تخفيضات 2026 (موسم استثنائي)",
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      "end": "2026-10-31"
    },
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      "key": "national-day-2026",
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      "end": "2026-09-30"
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      "end": "2026-11-12"
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    {
      "kind": "promo",
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      "firstSeenAt": "2026-10-05T05:38:48.841Z",
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    {
      "kind": "promo",
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