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The Physics of Ultra-High-Density Magnetic Recording (Springer Series in Surface Sciences Book 41)

by M.L. Plumer

In stock

Above normal

$145.26 is 14% above the $126.82 it normally sells for. It sold at or within 3% of $126.82 for at least about a week of the last 45 days.

Now
$145.26
Normally
$126.82
Lowest in 138 days
$126.82(Oct 31)
Highest
$146.23
Evidence: Strong138 days tracked31 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.

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Good: 5%+ below normal. Great: 20%+ below. One email when it happens. No account, no newsletter.

The listing's crossed-out price

Not below normal

The listing shows

crossed out: List $159.00 −9%

Against its normal price

+14% vs $126.82

This product has sold at or within 3% of $126.82 for at least about a week of the last 45 days, so today's price isn't below its normal price.

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 26 · 138 days · 31 price changes

Loading the price chart.

  • Price
  • Not checked for 3+ days
  • Normal $126.82
  • 5% or more below normal

Other ways to buy

  • New from

    $145.26

    Amazon.com Services LLCFulfilled by Amazon · Seller rating 100%

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Get this as JSONThe same verdict and prices, from the TrackPin API.
GET/api/v1/product/B000W90GO4
Request
curl https://trackpin.co/api/v1/product/B000W90GO4 \
  -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 19:10 UTC
{
  "asin": "B000W90GO4",
  "title": "The Physics of Ultra-High-Density Magnetic Recording (Springer Series in Surface Sciences Book 41)",
  "image": "https://m.media-amazon.com/images/I/51x15QaFV-L._AC_SL500_.jpg",
  "currency": "USD",
  "category": "eBooks",
  "category_label": "eBooks",
  "in_stock": true,
  "price": {
    "current_cents": 14526,
    "reference_cents": 12682,
    "discount_pct": -14.54,
    "is_deal": false,
    "observed_at": 1794411554265,
    "changed_at": 1794229572333,
    "checked_at": 1794411554265,
    "source": "stored"
  },
  "verdict": {
    "label": "above",
    "text": "Above normal",
    "pct_vs_normal": -14.54,
    "evidence": "strong",
    "stale": false,
    "suspect": false,
    "steady_since": null,
    "sentence": "Above normal. $145.26 is 14% above the $126.82 it normally sells for. It sold at or within 3% of $126.82 for at least about a week of the last 45 days."
  },
  "listing_claim": {
    "label": "List:",
    "listing_reference_cents": 15900,
    "claimed_pct": 9,
    "real_pct": -14.54,
    "class": "not_below_normal",
    "observed_at": 1794229704380
  },
  "stats": {
    "min_cents": 12682,
    "max_cents": 14623,
    "avg_cents": 14114,
    "history_days": 138,
    "price_levels": 229,
    "price_changes": 31,
    "distinct_prices": 4,
    "lowest_at": 1793448900110
  },
  "history": [
    {
      "price_cents": 14526,
      "from": 1793013425851,
      "to": 1793435738412
    },
    {
      "price_cents": 12682,
      "from": 1793448900110,
      "to": 1793527639581
    },
    {
      "price_cents": 14526,
      "from": 1793535210583,
      "to": 1794132902440
    },
    {
      "price_cents": 12908,
      "from": 1794144915075,
      "to": 1794221013814
    },
    {
      "price_cents": 14526,
      "from": 1794229572333,
      "to": 1794411554265
    }
  ],
  "last_seen": 1794411554265
}
// … 224 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.