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Terapeak Helper – eBay Fee & Profit Calculator, Sold Listings & Research

Chrome extension · Lifestyle · Shopping

A Chrome extension in Lifestyle · Shopping with 16 users, barely installed.

Specific sites only: 1 match pattern.

What the developer says, and 3 screenshots

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

Users
16
Rating
not rated yet
Users, last 4 days
+16
Version
1.0.2
Updated in the store
2026-09-30
Published
2026-09-30
Manifest
V3
Browser access
1 permission, 1 site pattern

How it has moved

Users
+16 since 01.10
0-16 · 2 readings
2026-10-01: appeared in the store
  1. 2026-10-010appeared in the store
  2. 2026-10-0416
Users
+16 since 01.10
0-16 · 2 readings
2026-10-01: appeared in the store
  1. 2026-10-010appeared in the store
  2. 2026-10-0416

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: 1 match pattern.

  • https://www.ebay.com/*
  • Store data in your browser storage

The full permission history for this extension

What changed recently

  1. Appeared in the store

Like this one

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

  1. eBay Listing Spy — Seller Analytics & Profit Calculator Describes nearly the same job, smaller audience 25 users
  2. eBay Seller Profit Calculator Describes nearly the same job, smaller audience 2 users
  3. eBay Profit Calculator Describes nearly the same job, smaller audience 13 users
  4. eBay Fee Calculator - Final Value Fees & Profit Margin Describes nearly the same job, smaller audience 1k users ★ 4.3
  5. FlipCalc - eBay Profit Calculator Describes nearly the same job, smaller audience 21 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.