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Brother DS-640 Compact Mobile Document Scanner, (Model: DS640)

Rated4.3(6,492 ratings)In stock

Normal price

$134.99 is what it normally sells for.

Now
$134.99
Normally
$134.99
Lowest in 143 days
$104.99(Jun 29)
Highest
$134.99
Evidence: Strong143 days tracked19 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. 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

Not below normal

The listing shows

crossed out: List $149.99 −10%

Against its normal price

≈ 0% vs $134.99

This product has sold at or within 3% of $134.99 for at least about a week of the last 45 days, so today's price isn't below its normal price.

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 21 · 143 days · 19 price changes

Ahead of Black Friday 2026 (Nov 27), it is at its normal price of $134.99. A price below $134.99 would be a real deal. Brother DS-640 Compact Mobile Document Scanner, (Model: DS640) price history, checked Nov 11, 2026: current price $134.99, normal (typical) price $134.99, average $132.23 over 143 days, lowest $104.99 (Jun 29, 2026), highest $134.99 (Sep 18, 2026).

Loading the price chart.

  • Price
  • Not checked for 3+ days
  • Normal $134.99
  • 5% or more below normal

How often does it drop below normal?

In the 143 days we've tracked it, it stayed 5% or more below today's normal price for an hour or more twice, typically lasting about 4 days. The last time ended Jul 7. One brief dip under an hour isn't counted.

A count of what happened, not a prediction.

Other ways to buy

  • New from

    $124.00

    Sunrise Electronics from West (S/N Recorded)Seller rating 58% of 318

11 of 13 offers
The 10 lowest of 11 offers, by price
SellerConditionPriceFBASeller rating
Sunrise Electronics from West (S/N Recorded)New$124.00No58% of 318
Znock Tech (S/N Recorded)New$129.95No50% of 418
Amazon.comNew$134.99Yes100%
Brandywine Tech（SN Recorded）New$139.96No75% of 2,185
OfficeNation, Inc.New$141.74No59% of 52
PCNationNew$141.74No59% of 16,683
Triplenet Pricing INCNew$157.22No62% of 90,686
Zone 3New$159.95Yes100% of 382
BeachAudioNew$161.72No67% of 181,360
Limitless O.P.New$168.99No58% of 867

Showing the 10 lowest of 11 offers.

Amazon lists 13 offers. These are from the first page of its offer list, sorted by price plus delivery, so a lower price may be further down.

More real deals in Electronics

See all
Get this as JSONThe same verdict and prices, from the TrackPin API.
GET/api/v1/product/B083R36CY4
Request
curl https://trackpin.co/api/v1/product/B083R36CY4 \
  -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 01:46 UTC
{
  "asin": "B083R36CY4",
  "title": "Brother DS-640 Compact Mobile Document Scanner, (Model: DS640)",
  "image": "https://m.media-amazon.com/images/I/51Gy2ymW70L._AC_SL500_.jpg",
  "currency": "USD",
  "category": "CE",
  "category_label": "Electronics",
  "in_stock": true,
  "price": {
    "current_cents": 13499,
    "reference_cents": 13499,
    "discount_pct": 0,
    "is_deal": false,
    "observed_at": 1794433005487,
    "changed_at": 1789690408319,
    "checked_at": 1794433005487,
    "source": "stored"
  },
  "verdict": {
    "label": "normal",
    "text": "Normal price",
    "pct_vs_normal": 0,
    "evidence": "strong",
    "stale": false,
    "suspect": false,
    "steady_since": null,
    "sentence": "Normal price. $134.99 is what it normally sells for."
  },
  "listing_claim": {
    "label": "List:",
    "listing_reference_cents": 14999,
    "claimed_pct": 10,
    "real_pct": 0,
    "class": "not_below_normal",
    "observed_at": 1794433007931
  },
  "stats": {
    "min_cents": 10499,
    "max_cents": 13499,
    "avg_cents": 13223,
    "history_days": 143,
    "price_levels": 538,
    "price_changes": 19,
    "distinct_prices": 7,
    "lowest_at": 1782725896483
  },
  "history": [
    {
      "price_cents": 13499,
      "from": 1789664197856,
      "to": 1789684310385
    },
    {
      "price_cents": 12827,
      "from": 1789684988573,
      "to": 1789684988573
    },
    {
      "price_cents": 13499,
      "from": 1789685366572,
      "to": 1789689016527
    },
    {
      "price_cents": 10509,
      "from": 1789689646905,
      "to": 1789690026031
    },
    {
      "price_cents": 13499,
      "from": 1789690408319,
      "to": 1794433005487
    }
  ],
  "last_seen": 1794433007931
}
// … 533 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.