Search
DeWalt DW840, standalone tool: 13 Amp 7 in. 8,000 RPM Medium Angle Grinder

DeWalt

DW840

13 Amp 7 in. 8,000 RPM Medium Angle Grinder

standalone tool

Retailer says · Last observed price

$166.02

last observed available online · Home Depot ·

Our record

watched 28 price-days spanning 34 calendar days

We conclude

The retailer makes no reference-price claim to audit.

Coverage · early record · watched since Sep 6 2026 · point-by-point since Sep 6 2026 · 28 price-days · 6 coverage gaps · 0 continuity breaks

Price record
Watch this exact offer

Alerts fire on our verdict, never on retailer banners. At most six price-alert emails in any rolling seven days.

Compare exact listings

Current offers

Current offers · fresh first

Not ranked · stale, unavailable, or unconfirmed

  • Home Depot stale · not rankedAvailable online

    Last seen price$166.02

    No reference-price claim 28 price-daysObserved
    View offer
    Open recordClose record
    Wasitever · Claim Audit

    DW840

    13 Amp 7 in. 8,000 RPM Medium Angle Grinder

    DeWalt · standalone tool · Home Depot · online national

    Retailer says
    $166.02 — Home Depot
    Our record
    watched 28 price-days spanning 34 calendar days
    We conclude

    The retailer makes no reference-price claim to audit.

    Coverage · early record · watched since Sep 6 2026· point-by-point since Sep 6 2026· 28 price-days · 6 coverage gaps · 0 continuity breaks· batch truncated

    Complete witnessed history

    Price record

    This is the independent record for the Home Depot listing above. It does not borrow prices, claims, or observations from another retailer.

    Evidence instrument · full point-by-point record

    Offered price vs. their claimed ‘was’

    Home Depot · Sep 06 2026–Oct 09 2026

    Offered price vs. their claimed ‘was’ The offered price is $166.02 as of Oct 9 2026; the retailer claims a $166.02 reference. The plotted record breaks across 6 missing observation runs. The vertical price scale visibly starts at $159. The complete relevant record is already in this pane; a second map would repeat it. $160$165$170FULL POINT-BY-POINT RECORD28 PRICE-DAYS$166.02 · OFFERED · Oct 9$166.02 · THEIR CLAIMED ‘WAS’Sep 6Sep 22Oct 9 BROKEN SCALE · STARTS AT $159
    Offered price vs. their claimed ‘was’ The offered price is $166.02 as of Oct 9 2026; the retailer claims a $166.02 reference. The plotted record breaks across 6 missing observation runs. The vertical price scale visibly starts at $159. The complete relevant record is already in this pane; a second map would repeat it. $160$165$170FULL POINT-BY-POINT RECORD · 28 PRICE-DAYS$166.02 · OFFERED · Oct 9$166.02 · THEIR CLAIMED ‘WAS’Sep 6Sep 22Oct 9 BROKEN SCALE · STARTS AT $159
    Offered price vs. their claimed ‘was’ The offered price is $166.02 as of Oct 9 2026; the retailer claims a $166.02 reference. The plotted record breaks across 6 missing observation runs. The vertical price scale visibly starts at $159. The complete relevant record is already in this pane; a second map would repeat it. $160$165$170FULL POINT-BY-POINT RECORD · 28 PRICE-DAYS$166.02 · OFFERED · Oct 9$166.02 · THEIR CLAIMED ‘WAS’Sep 6Sep 22Oct 9 BROKEN SCALE · STARTS AT $159

    No observations · 6 separate runs; dates in the point ledger.

    • offered, witnessed
    • their claimed “was”
    • no observations
    • detached price fact
    Chart notes and detached evidence

    Why this form

    The complete relevant record is already in this pane; a second map would repeat it.

    Every line uses reduced price-days for one exact retailer offer. Both series share the coverage mask; intraday and Class B facts remain detached marks. The receipt ledger below is the complete text alternative.
    Price history, changes, and missing observations — 14 entries

    Point ledger · stable row IDs

    Price history, changes, and missing observations

    14 entries · change points, gaps, and dated facts

    Complete dated text alternative to the price chart. A gap records missing knowledge; it never records an offer change.
    DateRecord eventOfferedClaimed “was”Receipt note
    Point-by-point record begins $166.02 $166.02
    Receipt · receipt-20260906-record-start

    Class C · complete observation.

    Source · WTV-EXPORT-00129

    Class C · complete observation.

    Source · WTV-EXPORT-00129
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20260912-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260912-20260912

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260912-20260912
    Complete observations resume $166.02 $166.02
    Receipt · receipt-20260913-record-resumes

    Class C · complete observation.

    Source · WTV-EXPORT-00212

    Class C · complete observation.

    Source · WTV-EXPORT-00212
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20260918-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260918-20260918

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260918-20260918
    Complete observations resume $166.02 $166.02
    Receipt · receipt-20260919-record-resumes

    Class C · complete observation.

    Source · WTV-EXPORT-00321

    Class C · complete observation.

    Source · WTV-EXPORT-00321
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20260921-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260921-20260921

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260921-20260921
    Complete observations resume $166.02 $166.02
    Receipt · receipt-20260922-record-resumes

    Class C · complete observation.

    Source · WTV-EXPORT-00399

    Class C · complete observation.

    Source · WTV-EXPORT-00399
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20260926-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260926-20260926

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260926-20260926
    Complete observations resume $166.02 $166.02
    Receipt · receipt-20260927-record-resumes

    Class C · complete observation.

    Source · WTV-EXPORT-00496

    Class C · complete observation.

    Source · WTV-EXPORT-00496
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20260928-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260928-20260928

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20260928-20260928
    Complete observations resume $166.02 $166.02
    Receipt · receipt-20260929-record-resumes

    Class C · complete observation.

    Source · WTV-EXPORT-00517

    Class C · complete observation.

    Source · WTV-EXPORT-00517
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20261005-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20261005-20261005

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-20261005-20261005
    Complete observations resume $166.02 $166.02
    Receipt · receipt-20261006-record-resumes

    Class C · complete observation.

    Source · WTV-EXPORT-00647

    Class C · complete observation.

    Source · WTV-EXPORT-00647
    Latest complete observation $166.02 $166.02
    Receipt · receipt-20261009-current

    Class C · complete observation.

    Source · WTV-EXPORT-00717

    Class C · complete observation.

    Source · WTV-EXPORT-00717
    Coverage and record credentials

    Record credentials

    What this page knows

    Exact scope
    DeWalt · DW840 · standalone tool · Home Depot · online national · config cfg-dewalt-dw840
    Watched since
    Sep 6 2026
    Point-by-point since
    Sep 6 2026
    Observation record
    28 price-days · up to six scheduled checks daily
    Latest covering batch
    truncated · 3985/unknown items · WTV-EXPORT-00717
    Observation classes travel with the price record. They are never silently blended.
    ClassRetained evidenceRendering law
    Class A0 price-daysretained complete observations
    Class B0 dated markdurable summary fact; never a curve
    Class C28 price-daysnew longitudinal record

    Coverage gaps · 6 coverage gaps · 0 continuity breaks

    • Sep 12 2026 · 1dNo observations in the published record.
    • Sep 18 2026 · 1dNo observations in the published record.
    • Sep 21 2026 · 1dNo observations in the published record.
    • Sep 26 2026 · 1dNo observations in the published record.
    • Sep 28 2026 · 1dNo observations in the published record.
    • Oct 5 2026 · 1dNo observations in the published record.

    Back to the Home Depot row

  • Tool Nut stale · not rankedAvailable online

    Last seen price$219.99

    No reference-price claim 33 price-daysObserved
    View offer
    Open recordClose record
    Wasitever · Claim Audit

    DW840

    13 Amp 7 in. 8,000 RPM Medium Angle Grinder

    DeWalt · standalone tool · Tool Nut · online national

    Retailer says
    $219.99 — Tool Nut
    Our record
    highest witnessed $219.99 Sep 3 2026lowest witnessed $186.99 Sep 23 2026
    We conclude
    Recorded verdict · last observed Oct 9 2026 · not confirmed current

    We have witnessed this offer lower: $186.99 on Sep 24 2026.

    Coverage · developing record · watched since Sep 3 2026· point-by-point since Sep 3 2026· 33 price-days · 4 coverage gaps · 0 continuity breaks· batch complete

    Watch this exact offer

    Alerts fire on our verdict, never on retailer banners. At most six price-alert emails in any rolling seven days.

    Complete witnessed history

    Price record

    This is the independent record for the Tool Nut listing above. It does not borrow prices, claims, or observations from another retailer.

    Evidence instrument · full point-by-point record

    Offered price vs. their claimed ‘was’

    Tool Nut · Sep 03 2026–Oct 09 2026

    Offered price vs. their claimed ‘was’ SEEN LOWER · $186.99 ON SEP 24. The offered price is $219.99 as of Oct 9 2026; the retailer supplied no claimed reference. The plotted record breaks across 4 missing observation runs. The vertical price scale visibly starts at $178. Claim absence changes only the retailer-claim series; offered observations remain continuous. $180$200$2201$186.99 · LOWEST PLOTTED OFFERFULL POINT-BY-POINT RECORD33 PRICE-DAYS$219.99 · OFFERED · Oct 9THEIR CLAIMED ‘WAS’Sep 3Sep 21Oct 9 BROKEN SCALE · STARTS AT $178
    Offered price vs. their claimed ‘was’ SEEN LOWER · $186.99 ON SEP 24. The offered price is $219.99 as of Oct 9 2026; the retailer supplied no claimed reference. The plotted record breaks across 4 missing observation runs. The vertical price scale visibly starts at $178. Claim absence changes only the retailer-claim series; offered observations remain continuous. $180$200$2201$186.99 · LOWEST PLOTTED OFFERFULL POINT-BY-POINT RECORD · 33 PRICE-DAYS$219.99 · OFFERED · Oct 9Sep 3Sep 21Oct 9 BROKEN SCALE · STARTS AT $178
    Offered price vs. their claimed ‘was’ SEEN LOWER · $186.99 ON SEP 24. The offered price is $219.99 as of Oct 9 2026; the retailer supplied no claimed reference. The plotted record breaks across 4 missing observation runs. The vertical price scale visibly starts at $178. Claim absence changes only the retailer-claim series; offered observations remain continuous. $180$200$2201$186.99 · LOWEST PLOTTED OFFERFULL POINT-BY-POINT RECORD · 33 PRICE-DAYS$219.99 · OFFERED · Oct 9Sep 3Sep 21Oct 9 BROKEN SCALE · STARTS AT $178

    No observations · 4 separate runs; dates in the point ledger.

    • offered, witnessed
    • their claimed “was”
    • no observations
    • detached price fact
    Chart notes and detached evidence

    Why this form

    Claim absence changes only the retailer-claim series; offered observations remain continuous.

    Every line uses reduced price-days for one exact retailer offer. Both series share the coverage mask; intraday and Class B facts remain detached marks. The receipt ledger below is the complete text alternative.
    Price history, changes, and missing observations — 11 entries

    Point ledger · stable row IDs

    Price history, changes, and missing observations

    11 entries · change points, gaps, and dated facts

    Complete dated text alternative to the price chart. A gap records missing knowledge; it never records an offer change.
    DateRecord eventOfferedClaimed “was”Receipt note
    Point-by-point record begins $219.99 — no observation
    Receipt · receipt-20260903-record-start

    Class C · complete observation.

    Source · WTV-COLLECT-00087

    Class C · complete observation.

    Source · WTV-COLLECT-00087
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20260921-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-TOOLNUT-20260921-20260921

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-TOOLNUT-20260921-20260921
    Complete observations resume $219.99 — no observation
    Receipt · receipt-20260922-record-resumes

    Class C · complete observation.

    Source · WTV-COLLECT-00391

    Class C · complete observation.

    Source · WTV-COLLECT-00391
    Offer and retailer claim changed · $219.99 → $186.99; — no observation → $219.99 $186.99 $219.99
    Receipt · receipt-20260923-combined-change

    Class C · complete observation.

    Source · WTV-COLLECT-00411

    Class C · complete observation.

    Source · WTV-COLLECT-00411
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20260925-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-TOOLNUT-20260925-20260925

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-TOOLNUT-20260925-20260925
    Complete observations resume $219.99 — no observation
    Receipt · receipt-20260926-record-resumes

    Class C · complete observation.

    Source · WTV-COLLECT-00464

    Class C · complete observation.

    Source · WTV-COLLECT-00464
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20261005-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-TOOLNUT-20261005-20261005

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-TOOLNUT-20261005-20261005
    Complete observations resume $219.99 — no observation
    Receipt · receipt-20261006-record-resumes

    Class C · complete observation.

    Source · WTV-COLLECT-00652

    Class C · complete observation.

    Source · WTV-COLLECT-00652
    No observations · 1 day — no observation — no observation
    Receipt · receipt-20261008-gap

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-TOOLNUT-20261008-20261008

    No observations in the published record.

    Source · WTV-GAP-dewalt-dw840-TOOLNUT-20261008-20261008
    Complete observations resume $219.99 — no observation
    Receipt · receipt-20261009-record-resumes

    Class C · complete observation.

    Source · WTV-COLLECT-00710

    Class C · complete observation.

    Source · WTV-COLLECT-00710
    Latest complete observation $219.99 — no observation
    Receipt · receipt-20261009-current

    Class C · complete observation.

    Source · WTV-COLLECT-00710

    Class C · complete observation.

    Source · WTV-COLLECT-00710
    Coverage and record credentials

    Record credentials

    What this page knows

    Exact scope
    DeWalt · DW840 · standalone tool · Tool Nut · online national · config cfg-dewalt-dw840
    Watched since
    Sep 3 2026
    Point-by-point since
    Sep 3 2026
    Observation record
    33 price-days · collection walk; cadence not yet set
    Latest covering batch
    complete · 2828/2828 items · WTV-COLLECT-00710
    Observation classes travel with the price record. They are never silently blended.
    ClassRetained evidenceRendering law
    Class A0 price-daysretained complete observations
    Class B0 dated markdurable summary fact; never a curve
    Class C33 price-daysnew longitudinal record

    Coverage gaps · 4 coverage gaps · 0 continuity breaks

    • Sep 21 2026 · 1dNo observations in the published record.
    • Sep 25 2026 · 1dNo observations in the published record.
    • Oct 5 2026 · 1dNo observations in the published record.
    • Oct 8 2026 · 1dNo observations in the published record.

    Back to the Tool Nut row

Retailers are ordered by price — never by what they pay us. Some links may earn this site a commission; the order and the verdicts don’t know which.

Sibling configurations — 1, each with its own record

Exact-offer boundary

Sibling configurations, each with its own record

The records below are siblings, not substitutes. A kit or bundle keeps its own composition, history, and verdict.