Skip to content
TrackPin
Check a price
Menu
Developers

Theme

Pentair Rainbow 320 in-Line Automatic Pool Chemical Feeder - R171096

Rated4.6(56 ratings)Only 2 left

Good price

$116.56 is 9% below the $128.17 it normally sells for, and the lowest we've seen in 140 days.

Now
$116.56
Normally
$128.17
Lowest in 140 days
$116.56(Nov 12)
Highest
$139.91
Evidence: Strong140 days tracked566 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 $116.56. No account, no newsletter.

Amazon price jumps and real deals, posted on X: @trackpindeals (opens in a new tab)

The listing's crossed-out price

Holds up

The listing shows

crossed out: Typical $130.98 −11%

Against its normal price

−9% vs $128.17

Typical $130.98 (−11%) holds up: today's price is 9% 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 24 · 140 days · 566 price changes

Ahead of Black Friday 2026 (Nov 27), it is already 9% below its normal price of $128.17. Pentair Rainbow 320 in-Line Automatic Pool Chemical Feeder price history, checked Nov 12, 2026: current price $116.56, normal (typical) price $128.17, average $130.36 over 140 days, lowest $116.56 (Nov 12, 2026), highest $139.91 (Sep 21, 2026).

Loading the price chart.

  • Price
  • Not checked for 3+ days
  • Normal $128.17
  • 5% or more below normal

How often does it drop below normal?

In the 140 days we've tracked it, it stayed 5% or more below today's normal price for an hour or more once, lasting less than a day. The last time ended Nov 4. It's below normal right now, for less than an hour so far. Brief dips under an hour (67) aren't counted.

A count of what happened, not a prediction.

More real deals in Patio & Garden

See all
Get this as JSONThe same verdict and prices, from the TrackPin API.
GET/api/v1/product/B002ZJ6KNA
Request
curl https://trackpin.co/api/v1/product/B002ZJ6KNA \
  -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 06:50 UTC
{
  "asin": "B002ZJ6KNA",
  "title": "Pentair Rainbow 320 in-Line Automatic Pool Chemical Feeder - R171096",
  "image": "https://m.media-amazon.com/images/I/71jwSDFtY0L._AC_SL500_.jpg",
  "currency": "USD",
  "category": "Lawn & Patio",
  "category_label": "Patio & Garden",
  "in_stock": true,
  "price": {
    "current_cents": 11656,
    "reference_cents": 12817,
    "discount_pct": 9.06,
    "is_deal": true,
    "observed_at": 1794466046617,
    "changed_at": 1794466046617,
    "checked_at": 1794466046617,
    "source": "stored"
  },
  "verdict": {
    "label": "good",
    "text": "Good price",
    "pct_vs_normal": 9.06,
    "evidence": "strong",
    "stale": false,
    "suspect": false,
    "steady_since": null,
    "sentence": "Good price. $116.56 is 9% below the $128.17 it normally sells for, and the lowest we've seen in 140 days."
  },
  "listing_claim": {
    "label": "Typical:",
    "listing_reference_cents": 13098,
    "claimed_pct": 11,
    "real_pct": 9.06,
    "class": "holds_up",
    "observed_at": 1794466060280
  },
  "stats": {
    "min_cents": 11656,
    "max_cents": 13991,
    "avg_cents": 13036,
    "history_days": 140,
    "price_levels": 750,
    "price_changes": 566,
    "distinct_prices": 12,
    "lowest_at": 1794466046617
  },
  "history": [
    {
      "price_cents": 11656,
      "from": 1794463152812,
      "to": 1794463999998
    },
    {
      "price_cents": 11821,
      "from": 1794464573650,
      "to": 1794464573650
    },
    {
      "price_cents": 11656,
      "from": 1794464838613,
      "to": 1794464838613
    },
    {
      "price_cents": 11821,
      "from": 1794465704826,
      "to": 1794465704826
    },
    {
      "price_cents": 11656,
      "from": 1794466046617,
      "to": 1794466046617
    }
  ],
  "last_seen": 1794466060280
}
// … 745 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.