ProfitLens Marketplace Overlay by Profit Lens

See your true margin on Etsy, Amazon, eBay, Poshmark, Depop, and Mercari listings — no store connect.

Some features may require payment

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About this extension

ProfitLens shows what you actually keep while browsing marketplace listings — no store connect, no spreadsheet.

How it works
- Open a listing on Etsy, Amazon, eBay, Poshmark, Depop, or Mercari
- The overlay reads the listing price on that page and applies 2026 fee rules + your COGS
- Margin, net profit, and fee breakdown appear on the listing

Features
- Margin overlay on supported marketplace listing pages
- Auto-fill COGS from your ProfitLens watchlist (after one visit to the site)
- Built-in fee stacks: Poshmark $15 cliff, Mercari 10%, Depop payment fee, Amazon/Etsy/eBay rules
- Free: 5 overlays per day
- Pro ($12/mo): unlimited overlays + full calculator sync via profitlens.cybersquarekw.com

Setup
Visit https://profitlens.cybersquarekw.com once to sync watchlist and Pro license. No marketplace login required.

Data
Listing prices are processed on your device. We do not sell personal data. See our privacy policy.

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Permissions and data

Required permissions:

Access your data for www.etsy.com
Access your data for etsy.com
Access your data for www.amazon.com
Access your data for amazon.com
Access your data for www.amazon.co.uk
Access your data for www.amazon.ca
Access your data for www.ebay.com
Access your data for ebay.com
Access your data for www.ebay.co.uk
Access your data for www.ebay.ca
Access your data for poshmark.com
Access your data for www.poshmark.com
Access your data for poshmark.ca
Access your data for www.poshmark.ca
Access your data for depop.com
Access your data for www.depop.com
Access your data for mercari.com
Access your data for www.mercari.com
Access your data for profitlens.cybersquarekw.com

Optional permissions:

Access your data for www.etsy.com
Access your data for etsy.com
Access your data for www.amazon.com
Access your data for amazon.com
Access your data for www.amazon.co.uk
Access your data for www.amazon.ca
Access your data for www.ebay.com
Access your data for ebay.com
Access your data for www.ebay.co.uk
Access your data for www.ebay.ca
Access your data for poshmark.com
Access your data for www.poshmark.com
Access your data for poshmark.ca
Access your data for www.poshmark.ca
Access your data for depop.com
Access your data for www.depop.com
Access your data for mercari.com
Access your data for www.mercari.com
Access your data for profitlens.cybersquarekw.com

Required data collection, according to the developer:

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