See what you keep after every fee.
MarginSlip is a profit calculator for online sellers. Enter a price and your costs, and it applies current eBay, Etsy or Amazon fees and shows your profit, your margin and the price you need.
Get it for USD 19One payment. No subscription. Works on phone and computer.
The fee rules are built in.
Category rates, not one guess
eBay charges books 15.3% and athletic shoes over $150 just 8%. Amazon charges beauty items 8% under $10 and 15% above. Pick the category and the right rate applies, including tiered rates on expensive items.
Every line shown
Listing fee, transaction fee, payment processing, per-order fee, international fee, ads. Each one is listed, so you can see which fee hurts most.
Your currency
Sell in USD and count costs in MYR, EUR, GBP, CAD, AUD, SGD or JPY. Rates come from the European Central Bank, or enter your own.
Price to hit a margin
Type the margin you want. The calculator works backwards through every fee and tells you the price to list at.
| Platform | What is included |
|---|---|
| eBay US | Final value fee by category, per-order fee, 1.65% international fee, Promoted Listings |
| Etsy | $0.20 listing, 6.5% transaction, payment processing by your bank country, Offsite Ads, currency conversion |
| Amazon US | Referral fee by category with minimums, media closing fee, Individual plan fee, your FBA fee |
Rates checked against each platform's official fee pages on 31 October 2026. We update them when platforms change their fees.
From payment to first calculation in a minute.
Pay once
Checkout is handled by Lemon Squeezy. Card and PayPal accepted.
Get your key
Your license key arrives by email straight after payment.
Sign in and calculate
Open the calculator, enter your key, and start. It also works in Malay, German and Spanish.
$19USD, once
Everything, for one payment.
- eBay, Etsy and Amazon fee rules, kept up to date
- Profit, margin and suggested price for every sale
- Saved calculations with CSV export for Google Sheets
- English, Malay, German and Spanish
- Use on up to 3 devices
- 14-day refund if it is not for you
Checkout opens on Lemon Squeezy, our payment provider and merchant of record.
Questions
Is this a subscription?
No. You pay USD 19 once and keep access, including fee updates for the platforms covered.
Which marketplaces does it cover?
eBay US, Etsy and Amazon US. Fees on other eBay or Amazon country sites are different; you can still enter a custom fee percentage for them.
How accurate is it?
It uses each platform's published fee rules. Your real fees can differ if your account has a special rate, a below-standard seller status, or a promotion. Treat results as an estimate and check your platform's fee report.
Where is my data kept?
Your calculations are saved in your own browser. We only store your email and license key to check your access. See the privacy policy.
Can I get a refund?
Yes. Email us within 14 days of purchase and we refund you in full. See the refund policy.
Who makes it?
Sehari Sejuta Enterprise (SSEGLOBALMARKET), a Malaysian company that sells on eBay every day. We built it for our own pricing first.