Ingersoll Rand 409 1/4" Collet Air Die Grinder | Max free speed up to 27,000 rpm, ideal for grinding, cutting, and polishing in tight or hard-to-reach spaces

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4.7(116 ratings)In stock

Good price

$71.99 is 8% below the $78.79 it normally sells for, and the lowest we've seen in 142 days.

Now: $71.99
Normally: $78.79
Lowest in 142 days: $71.99(Nov 9)
Highest: $112.21

Evidence: Strong142 days tracked178 price changeschecked 3h ago

Where today's price sits

Now $71.99Normal $78.79Typical $100.53$112.21

View on amazon.com

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.

The listing's crossed-out price

Smaller than shown

The listing shows

crossed out: ~~Typical $100.53 −28%~~

Against its normal price

−8% vs $78.79

The listing shows −28%. Against its normal price it's −8%.

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 →

Listing checked 8h ago

Price history

Tracked since Jun 22 · 142 days · 178 price changes

Price
Not checked for 3+ days
Normal $78.79
5% or more below normal

How often does it drop below normal?

In the 142 days we've tracked it, this is the first time it has stayed 5% or more below today's normal price for an hour or more. It has been below normal for about 2 days 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/B00SW6K4H8

Request

curl https://trackpin.co/api/v1/product/B00SW6K4H8 \
  -H "x-api-key: $TRACKPIN_API_KEY"

const res = await fetch("https://trackpin.co/api/v1/product/B00SW6K4H8", {
  headers: { "x-api-key": process.env.TRACKPIN_API_KEY },
});
const product = await res.json();

console.log(product.verdict.label, product.price.reference_cents);

import os, requests

r = requests.get(
    "https://trackpin.co/api/v1/product/B00SW6K4H8",
    headers={"x-api-key": os.environ["TRACKPIN_API_KEY"]},
)
product = r.json()

print(product["verdict"]["label"], product["price"]["reference_cents"])

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

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Live responseAs of 21:51 UTC

{
  "asin": "B00SW6K4H8",
  "title": "Ingersoll Rand 409 1/4\" Collet Air Die Grinder | Max free speed up to 27,000 rpm, ideal for grinding, cutting, and polishing in tight or hard-to-reach spaces",
  "image": "https://m.media-amazon.com/images/I/41oUEeUVJ8L._AC_SL500_.jpg",
  "currency": "USD",
  "category": "Home Improvement",
  "category_label": "Tools & Home Improvement",
  "in_stock": true,
  "price": {
    "current_cents": 7199,
    "reference_cents": 7879,
    "discount_pct": 8.63,
    "is_deal": true,
    "observed_at": 1794421190253,
    "changed_at": 1794229078140,
    "checked_at": 1794421190253,
    "source": "stored"
  },
  "verdict": {
    "label": "good",
    "text": "Good price",
    "pct_vs_normal": 8.63,
    "evidence": "strong",
    "stale": false,
    "suspect": false,
    "steady_since": null,
    "sentence": "Good price. $71.99 is 8% below the $78.79 it normally sells for, and the lowest we've seen in 142 days."
  },
  "listing_claim": {
    "label": "Typical:",
    "listing_reference_cents": 10053,
    "claimed_pct": 28,
    "real_pct": 8.63,
    "class": "smaller",
    "observed_at": 1794402416996
  },
  "stats": {
    "min_cents": 7199,
    "max_cents": 11221,
    "avg_cents": 9302,
    "history_days": 142,
    "price_levels": 358,
    "price_changes": 178,
    "distinct_prices": 26,
    "lowest_at": 1794229078140
  },
  "history": [
    {
      "price_cents": 7879,
      "from": 1793896613660,
      "to": 1793897542059
    },
    {
      "price_cents": 7759,
      "from": 1793898464213,
      "to": 1793898464213
    },
    {
      "price_cents": 7679,
      "from": 1793899105981,
      "to": 1793924907075
    },
    {
      "price_cents": 7599,
      "from": 1793925033642,
      "to": 1794212252107
    },
    {
      "price_cents": 7199,
      "from": 1794229078140,
      "to": 1794421190253
    }
  ],
  "last_seen": 1794421190253
}
// … 353 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.

Ingersoll Rand 409 1/4" Collet Air Die Grinder | Max free speed up to 27,000 rpm, ideal for grinding, cutting, and polishing in tight or hard-to-reach spaces

The listing's crossed-out price

Price history

How often does it drop below normal?

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