margin
23.1%
MarginPal sits on every Amazon product page and estimates net profit, margin, ROI and break-even price from real fee schedules — and badges every search result so you scan fifty products in the time a calculator website does one.
amazon.com · amazon.de · amazon.co.uk · amazon.co.jp
What you get
The 15% of the expensive suites that budget sellers actually use — batch scanning, honest math, a list you can export — without the $129/month.
Referral fee, FBA fulfillment tier, storage, your cost and inbound — net profit, margin, ROI, break-even and a suggested minimum price, with FBA vs FBM side by side.
on every /dp pageGreen or red profit pills on every search result, computed from your own cost assumptions. Free shows the first 3; Pro badges the whole page.
the batch workflowOne click saves the product with its numbers and your note. Group, search, and export everything to CSV for your sourcing spreadsheet.
Pro exportsBest-sellers rank with a rough monthly-sales range and the number of competing offers, right next to the math — a one-glance go / no-go.
v1.1Expand the panel to load the product's Keepa price-history chart — spot price wars and buy-box flips before you commit.
via KeepaFee tables refresh automatically every 12 hours across all four marketplaces, so a quarterly Amazon fee change never silently breaks your math.
no excel neededEstimates, honestly. MarginPal computes from Amazon's public fee schedules — not official real-time data. Numbers are labeled Estimate everywhere, and for a deal that matters you should confirm in Amazon's own Revenue Calculator. We'd rather tell you that than pretend to be official.
FAQ
They are estimates computed from Amazon’s publicly announced fee schedules (referral percentages, FBA fulfillment tiers, storage rates) that we keep updated in the extension. For most products they land within a few percent of Amazon’s official Revenue Calculator, but Amazon’s actual fees can differ (promotions, product-specific rules, fee changes). Every figure in MarginPal is labeled Estimate — verify material purchasing decisions in Amazon’s official calculator.
Yes — permanently, not a trial. Free gives you 5 product calculations per day, profit badges on the first 3 search results, and a 10-product watchlist. Pro ($9/month) removes the limits and adds CSV export.
amazon.com (US), amazon.de (Germany), amazon.co.uk (United Kingdom) and amazon.co.jp (Japan). Fee tables are per-marketplace and prices are shown in the local currency. More marketplaces are on the roadmap.
No. Install the extension and start using it. There is no sign-up; your product list is stored in your own browser (and syncs through your Google account only if you have Chrome sync enabled).
Nothing for ourselves — no analytics, no tracking, no advertising. The extension reads product data from the page you are viewing and keeps your inputs on your device. See our Privacy Policy for the full picture.
The panel shows both side by side: FBA includes Amazon’s fulfillment fee and storage estimate; FBM only subtracts the referral fee plus the shipping cost you enter, so you can compare channels instantly.
Any time, self-service: open the customer billing portal from your receipt email and cancel. Cancellation stops future charges immediately and Pro stays active until the end of the period you paid for. Details in the Terms of Service.
Full refund within 7 days of your first purchase — no questions asked. Renewals can be refunded within 7 days too. See the Refund Policy for details.
Email support@marginpal.app — we answer within 3 business days (usually much faster).