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PriceMatch: Costco Warehouse Price Adjustments

Chrome extension by Engsight Labs · Lifestyle · Shopping

A Chrome extension in Lifestyle · Shopping with 4 users, barely installed.

Specific sites only: 4 match patterns.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
4
Rating
not rated yet
Users, last 2 days
+4
Version
0.1.2
Updated in the store
2026-09-15
Published
2026-09-14
Manifest
V3
Browser access
2 permissions, 4 site patterns

How it has moved

Users
+4 since 15.09
0-4 · 2 readings
2026-09-15: appeared in the store2026-09-16: released 0.1.2
  1. 2026-09-150appeared in the store
  2. 2026-09-164released 0.1.2
Users
+4 since 15.09
0-4 · 2 readings
2026-09-15: appeared in the store2026-09-16: released 0.1.2
  1. 2026-09-150appeared in the store
  2. 2026-09-164released 0.1.2

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 4 match patterns.

  • https://www.costco.com/*
  • https://www.costco.ca/*
  • https://ecom-api.costco.com/*
Show the remaining 1
  • https://pricematch.engsight.app/*
  • Schedule work to run later alarms
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 0.1.2

What changed recently

  1. Package size changed
  2. Released version 0.1.2 (was 0.1.1)
  3. Appeared in the store

The publisher

Engsight Labs.

Like this one

Listings the catalog judges closest in what they say they do.

  1. Droply: Costco Price Adjustment Tracker Describes nearly the same job, smaller audience 40 users
  2. Costco Price Adjuster Describes nearly the same job, smaller audience 105 users ★ 5.0
  3. Costco Saver Describes nearly the same job, smaller audience 84 users ★ 3.0
  4. Costco Tools by RestockBotAlerts Describes a similar job, smaller audience 77 users
  5. DealGuard — Never Miss a Refund Describes a similar job, smaller audience 3 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.