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Essential Electrical Skills for HVACR: Theory and Labs

by Ernesto Reina

Rated4.2(8 ratings)In stock

Good price

$93.09 is 5% below the $98.00 it normally sells for, and the lowest we've seen in 138 days.

Now
$93.09
Normally
$98.00
Lowest in 138 days
$93.09(Nov 11)
Highest
$98.00
Evidence: Strong138 days tracked1 price change

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 $93.09. No account, no newsletter.

The listing's crossed-out price

Holds up

The listing shows

crossed out: List $98.00 −5%

Against its normal price

−5% vs $98.00

List $98.00 (−5%) holds up: today's price is 5% below normal.

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 25 · 138 days · 1 price change

Loading the price chart.

  • Price
  • Normal $98.00
  • 5% or more below normal

How often does it drop below normal?

In the 138 days we've tracked it, it hasn't stayed 5% or more below today's normal price for an hour or more. It's below normal right now, for less than an hour so far.

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/B0CL5R97LC
Request
curl https://trackpin.co/api/v1/product/B0CL5R97LC \
  -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 17:58 UTC
{
  "asin": "B0CL5R97LC",
  "title": "Essential Electrical Skills for HVACR: Theory and Labs",
  "image": "https://m.media-amazon.com/images/I/61J+NMssXXL._AC_SL500_.jpg",
  "currency": "USD",
  "category": "Book",
  "category_label": "Books",
  "in_stock": true,
  "price": {
    "current_cents": 9309,
    "reference_cents": 9800,
    "discount_pct": 5.01,
    "is_deal": true,
    "observed_at": 1794411153769,
    "changed_at": 1794409784825,
    "checked_at": 1794411153769,
    "source": "stored"
  },
  "verdict": {
    "label": "good",
    "text": "Good price",
    "pct_vs_normal": 5.01,
    "evidence": "strong",
    "stale": false,
    "suspect": false,
    "steady_since": null,
    "sentence": "Good price. $93.09 is 5% below the $98.00 it normally sells for, and the lowest we've seen in 138 days."
  },
  "listing_claim": {
    "label": "List:",
    "listing_reference_cents": 9800,
    "claimed_pct": 5,
    "real_pct": 5.01,
    "class": "holds_up",
    "observed_at": 1794411155968
  },
  "stats": {
    "min_cents": 9309,
    "max_cents": 9800,
    "avg_cents": 9800,
    "history_days": 138,
    "price_levels": 162,
    "price_changes": 1,
    "distinct_prices": 2,
    "lowest_at": 1794409784825
  },
  "history": [
    {
      "price_cents": 9800,
      "from": 1785291849265,
      "to": 1785307030506
    },
    {
      "price_cents": 9800,
      "from": 1785308897981,
      "to": 1785318009984
    },
    {
      "price_cents": 9800,
      "from": 1785320464366,
      "to": 1785320464366
    },
    {
      "price_cents": 9800,
      "from": 1785328016591,
      "to": 1794404276488
    },
    {
      "price_cents": 9309,
      "from": 1794409784825,
      "to": 1794411153769
    }
  ],
  "last_seen": 1794411155968
}
// … 157 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.