Profit Margin
Understand profit as a share of your revenue.
Business & Work · FREE TO USE
Collectible Sale Net Proceeds & ROI
See what a card or collectible sale leaves after purchase, grading, shipping and fees.
02EXAMPLE RESULT
Profit before tax and unmodeled costs
28.55
USD
Total transaction costs126.45USD
Variable marketplace fee20.15USD
Minimum break-even item sale price117.18USD
Return on all transaction costs22.58%
Results update as you type. Calculate adds a snapshot to your history.
How this calculation works
Prices and fees are editable assumptions, not a live valuation, authenticity check or sale guarantee. Some marketplaces charge fees on buyer taxes: enter any extra fee base explicitly without counting it as seller income. Costs round to the selected currency’s minor unit; the variable fee rounds once per transaction. ROI uses all modeled transaction costs and is undefined when those costs are zero. Tax, returns, insurance, financing and unsold inventory may change the outcome.
Fee = round((sale + shipping collected + additional fee base) × fee rate) + flat fee. Profit = sale + shipping collected − all transaction costs. ROI = profit / all transaction costs.
Your calculation, step by step
- Keep shipping income and extra fee base separate.
- Round the variable marketplace fee once.
- Subtract purchase, grading, shipping and all entered fees.
- Find the smallest currency-unit sale price that covers these modeled costs.
A worked example
Sale 150 plus shipping collected 5, purchase 80, grading 20, shipping paid 6, 13% fee and 0.30 flat fee leave 28.55 before tax.
Work through an example.
Inspect the assumptions and limits before applying a result.