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Dri-Eaz DefendAir 400 Primary HEPA Filter, 12" Diameter | DefendAir 400 primary HEPA filter, 12-inch. Captures 99.97% of dust and allergens down to 0.3 microns, no tools.

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Good price

$69.00 is 9% below the $76.43 it normally sells for, and the lowest we've seen in 126 days. Not on sale at our last check (12 days ago). Last price seen Oct 30.

Now
$69.00
Normally
$76.43
Lowest in 126 days
$69.00(Oct 23)
Highest
$84.00
Evidence: Thin126 days tracked6 price changesTreat this verdict as provisional.

Where today's price sits

The listing showed it out of stock. This price may not be available to buy.

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

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Good: 5%+ below normal. Great: 20%+ below. One email when it happens, at a price below today's $69.00. No account, no newsletter.

Price history

Tracked since Jun 25 · 126 days · 6 price changes

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  • Price
  • Not checked for 3+ days
  • Normal $76.43
  • 5% or more below normal

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Get this as JSONThe same verdict and prices, from the TrackPin API.
GET/api/v1/product/B0D1B34HWZ
Request
curl https://trackpin.co/api/v1/product/B0D1B34HWZ \
  -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 19:23 UTC
{
  "asin": "B0D1B34HWZ",
  "title": "Dri-Eaz DefendAir 400 Primary HEPA Filter, 12\" Diameter | DefendAir 400 primary HEPA filter, 12-inch. Captures 99.97% of dust and allergens down to 0.3 microns, no tools.",
  "image": "https://m.media-amazon.com/images/I/81eUqQAfn1L._AC_SL500_.jpg",
  "currency": "USD",
  "category": "Major Appliances",
  "category_label": "Appliances",
  "in_stock": false,
  "price": {
    "current_cents": 6900,
    "reference_cents": 7643,
    "discount_pct": 9.72,
    "is_deal": true,
    "observed_at": 1793343285890,
    "changed_at": 1792763417174,
    "checked_at": 1793344784273,
    "source": "stored"
  },
  "verdict": {
    "label": "good",
    "text": "Good price",
    "pct_vs_normal": 9.72,
    "evidence": "thin",
    "stale": true,
    "suspect": false,
    "steady_since": null,
    "sentence": "Good price. $69.00 is 9% below the $76.43 it normally sells for, and the lowest we've seen in 126 days. Not on sale at our last check (12 days ago). Last price seen Oct 30."
  },
  "listing_claim": null,
  "stats": {
    "min_cents": 6900,
    "max_cents": 8400,
    "avg_cents": 7958,
    "history_days": 126,
    "price_levels": 193,
    "price_changes": 6,
    "distinct_prices": 5,
    "lowest_at": 1792763417174
  },
  "history": [
    {
      "price_cents": 6900,
      "from": 1788636132093,
      "to": 1788636132093
    },
    {
      "price_cents": 7643,
      "from": 1788984346764,
      "to": 1789699884627
    },
    {
      "price_cents": 7772,
      "from": 1790742499532,
      "to": 1790961604481
    },
    {
      "price_cents": 8400,
      "from": 1791243818620,
      "to": 1792746193913
    },
    {
      "price_cents": 6900,
      "from": 1792763417174,
      "to": 1793343285890
    }
  ],
  "last_seen": 1793344786966
}
// … 188 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.