ProfitScope – Fee & Profit Calculator

About

Know your true profit before you list or sell.

This extension is a fast, easy-to-use calculator designed to help sellers estimate fees, costs, and profit margins in seconds. Whether you’re pricing a single item or testing different scenarios, you’ll get a clear breakdown of where your money is going.

✨ Key Features
Accurate fee estimates
Calculate marketplace-style final value fees based on your inputs
Built-in transaction fee logic
Automatically applies flat fees ($0.30 / $0.40) based on order value
Full cost breakdown
Include item cost, shipping cost, packaging, and more
Flexible inputs
Add buyer-paid shipping and sales tax
Promoted listing support
Factor in ad/promoted rates to see true margins
Toggle controls for precision
Switch between percentage (%) and flat dollar ($) inputs
Instant profit calculation
See net profit and margins update in real time

📊 What You Can Do
Price items confidently before listing
Avoid hidden fees cutting into your margins
Compare multiple pricing strategies instantly
Optimize for higher profit and better ROI

🎯 Who It’s For
Online sellers and resellers
Side hustlers and small business owners
Anyone looking to better understand selling fees and profit

⚠️ Important Disclaimer
This tool provides estimated calculations only. Actual fees may vary depending on platform rules, category, account status, and other factors.

🔒 Privacy & Data
No personal data is collected
No tracking or analytics
All calculations happen locally in your browser

🛑 Independence Notice
This extension is an independent tool and is not affiliated with or endorsed by eBay or any marketplace platform.

💡 Why Use This Extension?
Selling fees can be confusing—and small differences can significantly impact your profit. This tool simplifies the math so you can focus on making smarter pricing decisions with confidence.