12,000+ sellers★ 4.8 on Capterra

Amazon shows you sales.
We show your net profitmargin per SKUAds ROIhidden fees

SellerKey connects to your account and computes your real net profit —after every fee, ad and cost— by country, by product and by day. No spreadsheets, no estimates.

Calculate my profit free See how it works

★★★★★ 4.8/5 on Capterra, G2 and Trustpilot · 1 month free · no card

€38,343

net profit / month

21%

average real margin

countries in one panel

app.sellerkey.co

My Business

Financial overview of your account

Amazon EUEUR

OverviewData as of Sep 10Region/Countries 11

Sales

30 DAYS

vs Jul 12 – Aug 10

REVENUE ↑ +13.8%

€182,588

vs €160,456 · Jul 12 – Aug 10

UNITS ↑ +14.1%

4,735

ORDERS ↑ +13.0%

4,448

✓

CFO · YOUR BEST RECENT PERIOD

Revenue €182,588 (+13.8%) against €160,456 in the compared period.

Sales by market

30 DAYS

🇫🇷 France ↓ 13.0%

€69,417

1,813 units · 38.0% of total

🇩🇪 Germany ↑ 13.0%

€33,368

778 units · 18.3% of total

🇬🇧 United Kingdom ↑ 89.8%

€29,214

742 units · 16.0% of total

🇪🇸 Spain ↑ 31.8%

€23,736

651 units · 13.0% of total

Used by sellers billing from €5,000 to €2M per month

NORTHPEAKVendoraCASA&CObrixlyMERCADIALumenTIENDANOVA

The problem, in numbers

Selling isn't earning.
The gap costs you dearly.

2 of 3

sellers don't know their real net profit. They look at revenue and assume they're earning — until the settlement lands.

Source: SellerKey survey · 2026

€3,200

is the average refund Amazon owes a seller for lost or damaged inventory — and it's almost never claimed.

Source: average of connected accounts

42%

of accounts have at least one SKU losing money without knowing it: Ads and fees quietly eat the whole margin.

Source: SellerKey aggregate data

What sellers say

Don't take our word for it.
Take their margins'.

+€41,000 / year

“I found out my star product was losing money on Amazon PPC. SellerKey showed it in one glance — I fixed it in an afternoon, and that change gave me back forty thousand a year.”

Martín R.

Electronics · ES, IT, DE

Lucía C. — Amazon seller · Home · EU marketplace

€3,200 recovered

“SellerKey's refunds module found FBA shipments lost months ago. I claimed and Amazon returned €3,200 I'd given up on.”

Lucía C.

Home · EU marketplace

from 1 h to 30 s

“I used to spend Mondays in Excel stitching reports together. Now I open SellerKey and in thirty seconds I know my real net profit.”

Andrés F.

Sports · ES, FR

39% real margin

“I thought my margin was 50%. SellerKey put my real Amazon fees and returns on the table: 39%. Painful, but I finally make decisions on real data.”

Paula V.

Beauty · multi-country

5 countries, 1 panel

“I sell across five Amazon marketplaces. SellerKey consolidates everything in euros on one profit dashboard. It's the first time I've seen the full picture.”

Javier L.

Accessories · EU + UK

2 SKUs cut

“SellerKey showed me two products that lost money on every sale. I paused them. My monthly profit went up without selling more — just by stopping the bleed.”

Sofía N.

Toys · ES

€480 in storage fees

“Two slow SKUs had been piling up aged-inventory surcharges for months. SellerKey itemizes every fee, so I finally saw it — removal order went out that same week.”

Diego M.

Kitchen · DE, FR

Returns, finally counted

“My January ‘profit’ always shrank by March. SellerKey lands every Amazon return on the sale it came from, so the number I see is the number I actually keep.”

Carmen R.

Pets · ES, IT

Payouts explained

“I always knew what Amazon paid me every two weeks — never why. SellerKey breaks every payout down into fees, refunds and reserves. No more surprises.”

Tomás K.

Garden · EU + UK

The era of real margin

For years, Amazon success was measured in revenue. That era is over.

With rising fees, ever-pricier Ads and returns eroding margin, billing a lot no longer means earning. The seller who survives isn't the one who sells most — it's the one who knows, to the cent, how much is left.

SellerKey exists for exactly that: turning the chaos of reports, settlements and campaigns into a single truth you can read at a glance and act on today.

Your profit operating system

One platform, three principles
we don't compromise on.

SellerKey today; AdBoard, StockBoard and CatalogBoard on the way. All built on the same foundation.

Precise

The number Amazon pays

Data straight from your account, not averaged percentages. The profit on screen matches your settlement, to the cent.

Honest

Losses show up in red

If a product loses money, we say so without euphemisms. Read-only access: we don't touch your account — Amazon enforces it.

Automatic

Updates itself, every day

Connect once and you're done. Sales, fees, Ads and returns flow in on their own. Alerts when something starts losing margin.

How it works

One platform. One flow.
The full cycle of your profit.

Connect, understand and act on the same foundation. Watch each part of the panel in action as you go.

01 Connect

Your Amazon account, ready in 30 seconds

You sign in, approve read-only access, and you're done. No wizards, no checklists, no integration teams.

All your marketplaces, consolidated in euros
Imports 24 months of history instantly
Read-only: we can't change anything in your account

“I connected it over a coffee. By the time I finished, I already had two years of data on screen.”

Andrés F. · sports seller

read only

Connect account

Northwind · Amazon

read only

🇪🇸Amazon SpainConnected

🇩🇪Amazon GermanyConnected

🇫🇷Amazon FranceConnected

🇮🇹Amazon ItalyConnected

🇬🇧Amazon United KingdomSyncing…Connected

4 of 5 marketplaces · 24 months of history imported

02 Understand

Your profit, down to the last cent

We show the full waterfall: from sales we subtract fees, Ads, product cost and returns. What's left is your real profit — by country, by product and by day.

P&L waterfall per SKU, with every fee itemized
Margin, ROI and ACOS computed automatically
Export to Excel or PDF whenever you need

“I finally see where every euro comes from. My real margin was 11 points lower than I thought.”

Paula V. · beauty seller

Understand

Catalog · Profit

66 products · Amazon · ES

7D30D90D

Sales

€17,587

557 units · 30 days

Profit

€3,479

20% margin

Aged inv.

19%

167 units

Where does each euro of sales go?

Gross sales€17,587

− Commissions−€3,440

− Advertising−€4,20724% of sales

− Product cost−€6,461

Net profit€3,479

03 Act

Before the margin slips away

SellerKey watches your numbers and warns you: a SKU starting to lose, stock running out, an unclaimed refund. You decide; we give you the context and the suggested action.

Alerts for products losing money
Stock-out and aged-inventory surcharge warnings
Refunds detected and ready to claim

“It flagged a shipment lost months ago. I claimed and recovered €3,200.”

Lucía C. · home seller

your CFO

Your Amazon CFO

Moves for today · by impact

Stop the loss · VOLT-CABLE-3PK

Ads (€1,400) exceed gross margin: it loses on every sale. Pause the automatic campaign.

+€80/mo

Done · campaign paused · +€80/mo

Sell below cost · NORD-LAMP-WD

Negative net with 225 days of stock. An outlet recovers cash and avoids surcharges.

+€120/mo

Cut ACOS · VOLT-CHRG-65

13% margin against 28% ACOS. Lower bids by 20% and keep ~85% of sales.

+€210/mo

Start free now

We ship every week

The product you use today
is better than last week's.

We listen to sellers and ship improvements constantly. Here's the latest.

OCT 02

Profit waterfall per SKU

Full breakdown of every fee, Ad and cost, product by product.

SellerKey

SEP 25

Automatic refund detection

We find lost and damaged shipments and prepare the claim.

Refunds

SEP 18

Losing-SKU alerts

We warn you the moment a product starts losing margin.

Alerts

SEP 11

AdBoard enters open beta

Profitability per campaign and per SKU, tied to your real profit.

AdBoard

Built by people who live on margin

Not just another tool.
It's the one we wished we had.

2024

Born from frustration

A group of sellers tired of not knowing, each month, how much they truly earned.

2025

SellerKey, in production

Real net profit on one screen. Thousands of accounts connected in the first year.

2026

The profit operating system

AdBoard, StockBoard and CatalogBoard: a complete suite around your margin.

The data speaks

What we learned
from thousands of connected accounts.

19%

goes to Amazon commissions

On average, almost a fifth of every sale goes to fees before it reaches your pocket.

See the study

€3,200

in unclaimed refunds

The average seller leaves thousands of euros on the table that Amazon owes for inventory.

See the report

13 pts

of margin difference

Between the margin sellers think they have and the real one, after fees, Ads and returns.

See the data

Resources

We don't sell software.
We help you earn more.

Guides, templates and a community of sellers sharing what works.

Find out what last month
really paid you.

Connect your account in 30 seconds and see your real net profit. Free for a month, no card.

Calculate my profit free See a demo

1 month free · no credit card · cancel from the app

Amazon shows you sales.
We show your net profitmargin per SKUAds ROIhidden fees

My Business

Sales

Sales by market

Selling isn't earning.
The gap costs you dearly.

Don't take our word for it.
Take their margins'.

For years, Amazon success was measured in revenue. That era is over.

One platform, three principles
we don't compromise on.

The number Amazon pays

Losses show up in red

Updates itself, every day

One platform. One flow.
The full cycle of your profit.

Your Amazon account, ready in 30 seconds

Your profit, down to the last cent

Before the margin slips away

The product you use today
is better than last week's.

Profit waterfall per SKU

Automatic refund detection

Losing-SKU alerts

AdBoard enters open beta

Not just another tool.
It's the one we wished we had.

Born from frustration

SellerKey, in production

The profit operating system

What we learned
from thousands of connected accounts.

goes to Amazon commissions

in unclaimed refunds

of margin difference

We don't sell software.
We help you earn more.

Academy

YouTube

Community

Blog

Find out what last month
really paid you.

Amazon shows you sales.We show your net profitmargin per SKUAds ROIhidden fees

My Business

Sales

Sales by market

Selling isn't earning.The gap costs you dearly.

Don't take our word for it.Take their margins'.

For years, Amazon success was measured in revenue. That era is over.

One platform, three principleswe don't compromise on.

The number Amazon pays

Losses show up in red

Updates itself, every day

One platform. One flow.The full cycle of your profit.

Your Amazon account, ready in 30 seconds

Your profit, down to the last cent

Before the margin slips away

The product you use todayis better than last week's.

Profit waterfall per SKU

Automatic refund detection

Losing-SKU alerts

AdBoard enters open beta

Not just another tool.It's the one we wished we had.

Born from frustration

SellerKey, in production

The profit operating system

What we learnedfrom thousands of connected accounts.

goes to Amazon commissions

in unclaimed refunds

of margin difference

We don't sell software.We help you earn more.

Academy

YouTube

Community

Blog

Find out what last monthreally paid you.

Amazon shows you sales.
We show your net profitmargin per SKUAds ROIhidden fees

Selling isn't earning.
The gap costs you dearly.

Don't take our word for it.
Take their margins'.

One platform, three principles
we don't compromise on.

One platform. One flow.
The full cycle of your profit.

The product you use today
is better than last week's.

Not just another tool.
It's the one we wished we had.

What we learned
from thousands of connected accounts.

We don't sell software.
We help you earn more.

Find out what last month
really paid you.