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Seller Fee Calculator

Chrome extension by gzamon · Productivity · Tools

  • Established publisher

A Chrome extension in Productivity · Tools with 5 users, barely installed. Audience over the last 30 days: unchanged.

Specific sites only: 62 match patterns.

What the developer says, and 5 screenshots

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

Users
5 (the store no longer states an audience; this is the last figure it published)
Rating
not rated yet
Users, last 30 days
Unchanged
Version
0.3.5
Updated in the store
2026-09-30
Published
2026-06-13
Manifest
V3
Browser access
4 permissions, 62 site patterns

How it has moved

Users
unchanged since 08.10
4-6 · 12 readings
  1. 2026-10-104
  2. 2026-10-165
  3. 2026-10-186
  4. 2026-10-194
  5. 2026-10-215
  6. 2026-10-224
  7. 2026-10-245
  8. 2026-10-254
  9. 2026-10-305
  10. 2026-11-026
  11. 2026-11-045
  12. 2026-11-075
Users
unchanged since 01.09
4-6 · 26 readings
2026-09-30: released 0.3.5
  1. 2026-09-015
  2. 2026-09-026
  3. 2026-09-045
  4. 2026-09-056
  5. 2026-09-065
  6. 2026-09-086
  7. 2026-09-095
  8. 2026-09-134
  9. 2026-09-155
  10. 2026-09-174
  11. 2026-09-214
  12. 2026-09-255
  13. 2026-09-266
  14. 2026-09-285
  15. 2026-10-104
  16. 2026-10-165
  17. 2026-10-186
  18. 2026-10-194
  19. 2026-10-215
  20. 2026-10-224
  21. 2026-10-245
  22. 2026-10-254
  23. 2026-10-305
  24. 2026-11-026
  25. 2026-11-045
  26. 2026-11-075

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times 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: 62 match patterns.

  • https://sellercentral.amazon.com/*
  • https://sellercentral.amazon.co.uk/*
  • https://sellercentral.amazon.ca/*
Show the remaining 9
  • https://sellercentral.amazon.de/*
  • https://sellercentral.amazon.fr/*
  • https://sellercentral.amazon.it/*
  • https://sellercentral.amazon.es/*
  • https://sellercentral.amazon.co.jp/*
  • https://sellercentral.amazon.sa/*
  • https://sellercentral.amazon.ae/*
  • https://advertising.amazon.com/*
  • https://advertising.amazon.co.uk/*
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 0.3.5 · Asked for more permissions (66, was 65)

What changed recently

  1. Now requires Chrome 116
  2. Package size changed
  3. Asked for more permissions (66, was 65)
Show the remaining 3
  1. Store description rewritten (91 → 110 characters)
  2. Renamed from "Seller Fee Calculator Shortcuts" to "Seller Fee Calculator"
  3. Released version 0.3.5 (was 0.2.2)

The publisher

gzamon publishes 5 listings we track, 2k users between them. Listed website: ecomcalctools.com.

  1. 抖音运营助手 - 自动抖｜AI评论、关键词截流、意向客户识别与私信跟进 gzamon · Lifestyle · Social · published 2026-10-07 1k users ★ 5.0
  2. 小红书运营助手 - 自动薯｜AI评论、关键词截流、意向识别与获客跟进 gzamon · Productivity · Tools · published 2024-12-25 731 users ★ 5.0
  3. Ins Autopilot: Instagram Auto Follow, Unfollow & DM Outreach gzamon · Lifestyle · Social · published 2026-09-25 34 users ★ 5.0
Show 1 more from this publisher
  1. 线索薯 - 小红书意向客户识别与智能私信助手 gzamon · Productivity · Tools · published 2026-10-28 2 users (last published figure)

Like this one

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

  1. FeeCalc — Seller Fee Calculator Describes nearly the same job, smaller audience 4 users ★ 5.0
  2. Calculadora de Custos Marketplace Describes nearly the same job, smaller audience 55 users ★ 5.0
  3. Reseller Profit Calculator Describes nearly the same job, smaller audience 3 users (last published figure)
  4. Just Sell - Seller Fee & Payout Calculator Describes nearly the same job, smaller audience 2 users
  5. Effective Cost Calculator Describes nearly the same job, smaller audience 6 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.

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The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

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HTML

<a href="https://extops.dev/extensions/cgjpbbclgakoajcnhimhlkohgbjgnkhe"><img src="https://extops.dev/extensions/cgjpbbclgakoajcnhimhlkohgbjgnkhe/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-04. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built