3M Dual-Swivel Monitor Arm MA140MB price history, checked Nov 15, 2026: Normal price. $144.48 is within 5% of the $140.30 it normally sells for.
3M Dual-Swivel Monitor Arm, Black (MA140MB)
Normal price
$144.48 is within 5% of the $140.30 it normally sells for.
- Now
- $144.48
- Normally
- $140.30
- Lowest in 145 days
- $112.25(Oct 7)
- Highest
- $145.69
Where today's price sits
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.
Amazon price jumps and real deals, posted on X: @trackpindeals (opens in a new tab)
Price history
Tracked since Jun 22 · 145 days · 300 price changes
Ahead of Black Friday 2026 (Nov 27), it is at its normal price of $140.30. A price below $140.30 would be a real deal. 3M Dual-Swivel Monitor Arm, Black (MA140MB) price history, checked Nov 15, 2026: current price $144.48, normal (typical) price $140.30, average $135.19 over 145 days, lowest $112.25 (Oct 7, 2026), highest $145.69 (Oct 23, 2026).
Loading the price chart.
- Price
- Not checked for 3+ days
- Normal $140.30
- 5% or more below normal
How often does it drop below normal?
In the 145 days we've tracked it, it stayed 5% or more below today's normal price for an hour or more 49 times, typically lasting less than a day. The last time ended Nov 15. Brief dips under an hour (20) aren't counted.
A count of what happened, not a prediction.
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Get this as JSONThe same verdict and prices, from the TrackPin API.
curl https://trackpin.co/api/v1/product/B009NSJ8J4 \
-H "x-api-key: $TRACKPIN_API_KEY"const res = await fetch("https://trackpin.co/api/v1/product/B009NSJ8J4", {
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/B009NSJ8J4",
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.
Request a key{
"asin": "B009NSJ8J4",
"title": "3M Dual-Swivel Monitor Arm, Black (MA140MB)",
"image": "https://m.media-amazon.com/images/I/61K6PWFqxaL._AC_SL500_.jpg",
"currency": "USD",
"category": "Office Product",
"category_label": "Office",
"in_stock": true,
"price": {
"current_cents": 14448,
"reference_cents": 14030,
"discount_pct": -2.98,
"is_deal": false,
"observed_at": 1794718373598,
"changed_at": 1794718373598,
"checked_at": 1794718373598,
"source": "stored"
},
"verdict": {
"label": "normal",
"text": "Normal price",
"pct_vs_normal": -2.98,
"evidence": "strong",
"stale": false,
"suspect": false,
"steady_since": null,
"sentence": "Normal price. $144.48 is within 5% of the $140.30 it normally sells for."
},
"listing_claim": null,
"stats": {
"min_cents": 11225,
"max_cents": 14569,
"avg_cents": 13519,
"history_days": 145,
"price_levels": 482,
"price_changes": 300,
"distinct_prices": 22,
"lowest_at": 1791367865448
},
"history": [
{
"price_cents": 14448,
"from": 1794655638854,
"to": 1794655638854
},
{
"price_cents": 12689,
"from": 1794664492261,
"to": 1794690990898
},
{
"price_cents": 14448,
"from": 1794692510898,
"to": 1794694960021
},
{
"price_cents": 13325,
"from": 1794709567761,
"to": 1794710446421
},
{
"price_cents": 14448,
"from": 1794718373598,
"to": 1794718373598
}
],
"last_seen": 1794718386431
}
// … 477 more steps in the full responseNormal 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.