Nusty Space › How do I find my real profit per Amazon product? › Spreadsheet, free calculator or tool for profit?
Spreadsheet, free calculator or tool for profit?
A spreadsheet or free calculator works for a few products and one-off math. With many listings, changing fees and varying cost, a tool connected to your account, like Nusty Space, saves retyping everything. The right choice depends on your volume and the time you have.
When is a spreadsheet enough?
- Few products and stable prices: a spreadsheet works if you keep cost and fees current. Sebrae pricing guide
- Amazon's commissions of 10% to 15% must be typed in by hand. Amazon selling prices
- Price and fee data can be read through the SP-API instead of typed. SP-API documentation
- Nusty Space costs R$ 29.90 for 30 days and has a 3-day free trial. Nusty Space plans
When is a free calculator worth it?
To simulate a product before buying. It does not track what you already sell.
When is a connected tool worth it?
When you want profit per product from real data, alerts and reports without redoing the math.
What common mistakes should you avoid?
- Copying a spreadsheet formula without checking the fee.
- Using one category's calculator for another.
- Leaving the spreadsheet untouched for weeks.
Frequently asked questions
Is a spreadsheet worse?
No. It just takes more work as the catalog grows.
Can I use both?
Yes. Simulate with the calculator and track with the tool.
Does Nusty Space replace my accountant?
No. Confirm taxes with an accountant.
How do I test the tool?
With the 3-day free trial, no card.
When is a spreadsheet still enough?
For a few products with costs that rarely change, a spreadsheet works. The problem is updating prices and fees by hand on every sale. Nusty Space reads that data from Amazon through the SP-API and leaves only the cost of each product for you to enter.