What you really keep from every Amazon sale.
Crystal Clear KPI brings together your sales, the fees Amazon charges, shipping, advertising and your purchase costs. You see the net margin of every product, country by country, updated every night.
- VAT€4.15
- Cost of goods€5.20
- Amazon fees€3.74
- Shipping€4.10
- Ads€2.30
- Net margin€5.41
An example: every product has its own in the app.
What makes money, what converts
What really makes money
Two products with similar revenue. The first keeps more than half as net margin; the second loses money once advertising is paid. Without the fee detail, both would look fine.

What converts
Sessions, page views, conversion rate and Buy Box share, product by product and against the previous period: you see where traffic turns into sales, and where it's lost.

What you see
- Net margin per product
- Revenue minus VAT, refunds, cost of goods, Amazon fees, shipping, packaging, advertising and other costs. Per product, per variation or per parent product.
- Every Amazon fee
- Referral fee, per-item fee, closing fee, digital services tax, FBA fees, storage: as charged by Amazon, not estimated.
- Advertising where it belongs
- Sponsored Products spend per product and per country, ACoS and TACoS, by importing the Amazon Ads report or connecting your ads account.
- The per-unit view
- Every line of the P&L divided by units sold: what one item really earns, from the selling price down to the margin.
- Stock and how long it lasts
- FBA and self-fulfilled stock, sales per day, days of stock left and the estimated out-of-stock date.
- All of Europe
- France, Germany, Italy, Spain, the Netherlands, Belgium, Ireland, Sweden, Poland and the United Kingdom, each currency converted to euros.
A look at the app
Screenshots taken with demo data.
Getting started
MIRABEAU TRUST connects your Amazon account
You authorise read access to your seller data from Amazon Seller Central, and to your ads account if you wish. You never share your Amazon password with us.
You enter your purchase costs
Product by product or by importing a file. The app flags products sold without a cost.
The figures update themselves
Every night, the previous day's sales, fees, stock and ads are imported. You read, export to CSV and invite your team.
Pricing
€49per month, excl. VAT
- No commitment: stop whenever you want.
- 7-day free trial.
- During the trial, the last 30 days of data are imported.
Your data
- Hosted in the European Union, in Belgium, on Google Cloud.
- Amazon access is encrypted and only used to read your data.
- Three access levels for your team: read-only, edit, owner.
- No advertising trackers or audience measurement on the website or the app.
- A service by MIRABEAU TRUST, a French company registered in Nanterre.
Questions
Are the figures real-time?
They update every night with the previous day's complete data. Amazon adjusts some fees and refunds a few days after a sale: recent days are recalculated automatically.
Where do the Amazon fees come from?
From Amazon's financial statements, line by line. When a product has no fee charged yet in the period, its row says so.
Do I have to give my Amazon password?
No. Access goes through Amazon's official authorisation, which you can withdraw at any time in Seller Central.
Can my team use it?
Yes, each person has their own login, read-only or allowed to edit costs.
How do I start?
Write to postmaster@crystal-clear-kpi.com. We create your space, connect your Amazon account with you, and the 7-day free trial begins.
Contact us
A question, a demo, a trial: write to us.
Write to postmaster@crystal-clear-kpi.com
MIRABEAU TRUST, 64 rue Mirabeau, 92160 Antony, France