Nusty Space › How do I find my real profit per Amazon product? › How does Nusty Space calculate profit per product?
How does Nusty Space calculate profit per product?
Nusty Space calculates profit per product from real data: it reads the selling price and fees from your account through Amazon's official API (SP-API), adds the product cost you enter, and shows profit, margin and ROI. If any piece is missing, the dashboard shows "—" rather than guessing.
Which data sources does it use?
- The connection uses the Selling Partner API (SP-API), Amazon's official interface for sellers. SP-API documentation
- Amazon states commissions of 10% to 15% for selling in Brazil. Amazon selling prices
- Sebrae lists product cost, expenses and taxes as parts of the selling price. Sebrae pricing guide
- All three plans, R$ 29.90 (30 days), R$ 69.90 (90 days) and R$ 219.90 (365 days), share the same features. Nusty Space plans
Where does the selling price come from?
Only from Amazon, read-only. Nusty Space never invents a price.
What do you have to enter?
Your product cost (COGS). Amazon does not know what you paid your supplier.
What common mistakes should you avoid?
- Leaving cost blank and trusting the profit.
- Forgetting to update cost after a new purchase.
- Comparing products whose costs date from different periods.
What does the dashboard show after the math?
Profit per product, margin and ROI, plus alerts when profit, margin or ROI fall below the value you set.
Frequently asked questions
Does Nusty Space change my Amazon price?
No. Price is read from Amazon. Any change happens only with your confirmation.
What if a fee is missing?
The dashboard shows "—" and does not fill in a guess.
Do I need technical skills?
No. You connect the account and enter cost.
Can I try before paying?
Yes: 3 days free, no card.
What shows when data is missing?
The dashboard shows “—” or “unavailable”. Nusty Space does not fill in a fee, price or cost with a guess, because a profit built on invented data leads to wrong decisions. That way you see exactly what is still missing for each product.