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FBA Calculator - Free Amazon Profit & Fee Calculator by AMZ Prep

Chrome extension by AMZ Prep · Productivity · Tools

A Chrome extension in Productivity · Tools with 90 users, barely installed.

Specific sites only: 10 match patterns.

What the developer says, and 4 screenshots

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

Users
90
Rating
not rated yet
Users, last 16 days
+9
Version
1.0
Updated in the store
2025-06-10
Published
2025-06-10
Manifest
V3
Browser access
3 permissions, 10 site patterns

How it has moved

Users
+9 since 31.08
79-93 · 9 readings
  1. 2026-08-3181
  2. 2026-09-0279
  3. 2026-09-0380
  4. 2026-09-0583
  5. 2026-09-0686
  6. 2026-09-0889
  7. 2026-09-0993
  8. 2026-09-1387
  9. 2026-09-1590
Users
+9 since 31.08
79-93 · 9 readings
  1. 2026-08-3181
  2. 2026-09-0279
  3. 2026-09-0380
  4. 2026-09-0583
  5. 2026-09-0686
  6. 2026-09-0889
  7. 2026-09-0993
  8. 2026-09-1387
  9. 2026-09-1590

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: 10 match patterns.

  • *://*.amazon.com/*
  • *://*.amazon.co.uk/*
  • *://*.amazon.ca/*
Show the remaining 7
  • *://*.amazon.de/*
  • *://*.amazon.fr/*
  • *://*.amazon.it/*
  • *://*.amazon.es/*
  • *://*.amazon.co.jp/*
  • *://*.amazon.in/*
  • *://*.amazon.ae/*
  • Act on the current tab, but only after you click it activeTab
  • Add items to the right-click menu contextMenus
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

AMZ Prep publishes 5 listings we track, 1k users between them. Listed website: amzprep.com.

  1. Amazon FBA Calculator & Seller Tools – Free Profit, BSR & Fee Analyzer AMZ Prep · Productivity · Tools · published 2024-12-21 653 users ★ 5.0
  2. Amazon & Shopify Data Exporter - AMZ Prep Global 3PL AMZ Prep · Productivity · Tools · published 2025-08-26 218 users ★ 5.0
  3. Amazon Keyword Index Checker & Rank Tracker AMZ Prep · Productivity · Workflow · published 2025-12-06 128 users ★ 5.0
Show 1 more from this publisher
  1. AMZ Prep MCF Calculator - Save 30% on Amazon Fulfillment AMZ Prep · Productivity · Workflow · published 2024-12-10 27 users ★ 5.0

Like this one

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

  1. Amazon FBA Calculator Free by AMZScout Describes nearly the same job, with a large installed audience 100k users ★ 4.2
  2. SellerSprite Profit - FBA Calculator for free Describes nearly the same job, smaller audience 685 users
  3. Verimargin - Amazon FBA Profit & Fee Calculator Describes nearly the same job, smaller audience 6 users (last published figure)
  4. FBA calculator for Amazon Sellers : SellerApp Describes nearly the same job, with an established audience 70k users ★ 4.1
  5. FBA True Profit: 2026 Fees & Sales Estimator Describes nearly the same job, smaller audience 12 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.

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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.