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Sunday Riley A.I. Adaptive Retinoid Serum For Blemish Prone Skin

Rated4.5(5 ratings)In stock

Good price

$59.50 is 12% below the $68.00 it normally sells for, and the lowest we've seen in 136 days.

Now
$59.50
Normally
$68.00
Lowest in 136 days
$59.50(Nov 9)
Highest
$85.00
Evidence: Strong136 days tracked6 price changes

Where today's price sits

View on amazon.com (opens in a new tab)

Prices change. Confirm the price on Amazon before you buy. TrackPin may earn a commission if you buy, at no cost to you; it never changes a verdict.

Get an email when the price drops

Good: 5%+ below normal. Great: 20%+ below. One email when it happens, at a price below today's $59.50. No account, no newsletter.

The listing's crossed-out price

Smaller than shown

The listing shows

crossed out: List $85.00 −30%

Against its normal price

−12% vs $68.00

The listing shows −30%. Against its normal price it's −12%.

The crossed-out price is the reference shown on the listing. We don't know how it was set; we only compare it with prices we've observed. How we check →

Price history

Tracked since Jun 28 · 136 days · 6 price changes

Loading the price chart.

  • Price
  • Not checked for 3+ days
  • Normal $68.00
  • 5% or more below normal

How often does it drop below normal?

In the 136 days we've tracked it, it stayed 5% or more below today's normal price for an hour or more twice, typically lasting about 4 days. It's below normal right now.

A count of what happened, not a prediction.

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Get this as JSONThe same verdict and prices, from the TrackPin API.
GET/api/v1/product/B0FLX6PPYJ
Request
curl https://trackpin.co/api/v1/product/B0FLX6PPYJ \
  -H "x-api-key: $TRACKPIN_API_KEY"

This is exactly what the API returns for this product. Free keys include 100 requests a day.

Request a key
Live response, As of 19:13 UTC
{
  "asin": "B0FLX6PPYJ",
  "title": "Sunday Riley A.I. Adaptive Retinoid Serum For Blemish Prone Skin",
  "image": "https://m.media-amazon.com/images/I/61hBIV4opkL._AC_SL500_.jpg",
  "currency": "USD",
  "category": "Prestige Beauty",
  "category_label": "Luxury Beauty",
  "in_stock": true,
  "price": {
    "current_cents": 5950,
    "reference_cents": 6800,
    "discount_pct": 12.5,
    "is_deal": true,
    "observed_at": 1794411449531,
    "changed_at": 1794210412797,
    "checked_at": 1794411449531,
    "source": "stored"
  },
  "verdict": {
    "label": "good",
    "text": "Good price",
    "pct_vs_normal": 12.5,
    "evidence": "strong",
    "stale": false,
    "suspect": false,
    "steady_since": null,
    "sentence": "Good price. $59.50 is 12% below the $68.00 it normally sells for, and the lowest we've seen in 136 days."
  },
  "listing_claim": {
    "label": "List:",
    "listing_reference_cents": 8500,
    "claimed_pct": 30,
    "real_pct": 12.5,
    "class": "smaller",
    "observed_at": 1794210427617
  },
  "stats": {
    "min_cents": 5950,
    "max_cents": 8500,
    "avg_cents": 7861,
    "history_days": 136,
    "price_levels": 183,
    "price_changes": 6,
    "distinct_prices": 4,
    "lowest_at": 1794210412797
  },
  "history": [
    {
      "price_cents": 8500,
      "from": 1785324576996,
      "to": 1789455062250
    },
    {
      "price_cents": 6800,
      "from": 1791335574245,
      "to": 1792115047214
    },
    {
      "price_cents": 8500,
      "from": 1792119166935,
      "to": 1792871161636
    },
    {
      "price_cents": 7225,
      "from": 1792874285145,
      "to": 1794193400371
    },
    {
      "price_cents": 5950,
      "from": 1794210412797,
      "to": 1794411449531
    }
  ],
  "last_seen": 1794411449531
}
// … 178 more steps in the full response

Normal price: the lowest price level the product held for at least 15% of the last 45 days (about a week). Prices within 3% of each other count as one level, and we use the lowest price in that level. How we calculate it → Prices are observations of amazon.com and may be incomplete or delayed. TrackPin is not affiliated with Amazon.