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Underpriced AI

Chrome extension by kratzertechnology · Lifestyle · Shopping

  • Trader

A Chrome extension in Lifestyle · Shopping with 55 users, barely installed.

Specific sites only: 23 match patterns.

What the developer says, and 3 screenshots

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

Users
55
Rating
not rated yet
Users, last 17 days
+10
Version
1.2.1
Updated in the store
2026-09-16
Published
2026-01-23
Manifest
V3
Browser access
6 permissions, 23 site patterns

How it has moved

Users
+10 since 01.09
45-58 · 10 readings
2026-09-17: released 1.2.1
  1. 2026-09-0145
  2. 2026-09-0246
  3. 2026-09-0450
  4. 2026-09-0655
  5. 2026-09-0754
  6. 2026-09-0857
  7. 2026-09-0958
  8. 2026-09-1353
  9. 2026-09-1558
  10. 2026-09-1755released 1.2.1
Users
+10 since 01.09
45-58 · 10 readings
2026-09-17: released 1.2.1
  1. 2026-09-0145
  2. 2026-09-0246
  3. 2026-09-0450
  4. 2026-09-0655
  5. 2026-09-0754
  6. 2026-09-0857
  7. 2026-09-0958
  8. 2026-09-1353
  9. 2026-09-1558
  10. 2026-09-1755released 1.2.1

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: 23 match patterns.

  • https://underpricedai.com/*
  • https://www.underpricedai.com/*
  • https://www.facebook.com/*
Show the remaining 9
  • https://m.facebook.com/*
  • https://poshmark.com/*
  • https://*.poshmark.com/*
  • https://www.mercari.com/*
  • https://www.depop.com/*
  • https://www.whatnot.com/*
  • https://www.vinted.com/*
  • https://www.vinted.co.uk/*
  • https://www.vinted.de/*
  • Manage your downloads downloads
  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
Show the remaining 3
  • Add items to the right-click menu contextMenus
  • Show you notifications notifications
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.2.1

What changed recently

  1. Package size changed
  2. Released version 1.2.1 (was 1.1.9)

The publisher

kratzertechnology. Listed website: underpricedai.com.

Like this one

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

  1. Item Value Checker Describes nearly the same job, smaller audience 2 users
  2. HawkVal — Instant Item Valuation Describes nearly the same job, smaller audience 3 users
  3. DealScan — Marketplace Deal Evaluator Describes nearly the same job, smaller audience 3 users ★ 5.0
  4. SecondFish: Automated Marketplace Flip & Deal Analyzer Describes nearly the same job, smaller audience 51 users ★ 4.9
  5. Underpriced – Reseller Profit Checker Describes nearly the same job, smaller audience 164 users ★ 5.0

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.