Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Expected profit
$73.90
Expected graded value
$165.90
ROI
80.3%
Verdict
Worth grading
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter raw card value ($).
- 2Enter gem-mint (10) comp ($).
- 3Enter grade 9 comp ($).
- 4Enter odds of a 10 (%).
- 5Enter odds of a 9 (%).
- 6Enter grading fee + shipping ($).
- 7Read your expected profit on the right — it updates as you type.
- 8Hit Share to keep the scenario or send it to someone.
About this calculator
Grading fees, shipping, and turnaround only pay off if the graded comp clears the raw price by enough. This shows expected profit weighted by grade odds.
Worked example
Using the values the calculator loads with:
Inputs
- Raw card value: 60 $
- Gem-mint (10) comp: 420 $
- Grade 9 comp: 140 $
- Odds of a 10: 20 %
- Odds of a 9: 45 %
- Grading fee + shipping: 32 $
Results
- Expected profit: $73.90
- Expected graded value: $165.90
- ROI: 80.3%
- Verdict: Worth grading
What each field means
Inputs
- Raw card value ($)
- The raw card value used in the calculation, measured in $. Starts at 60 $ so you have a working example on load.
- Gem-mint (10) comp ($)
- The gem-mint (10) comp used in the calculation, measured in $. Starts at 420 $ so you have a working example on load.
- Grade 9 comp ($)
- The grade 9 comp used in the calculation, measured in $. Starts at 140 $ so you have a working example on load.
- Odds of a 10 (%)
- The odds of a 10 used in the calculation, measured in %. Starts at 20 % so you have a working example on load. Accepted range: 0–100 %.
- Odds of a 9 (%)
- The odds of a 9 used in the calculation, measured in %. Starts at 45 % so you have a working example on load. Accepted range: 0–100 %.
- Grading fee + shipping ($)
- The grading fee + shipping used in the calculation, measured in $. Starts at 32 $ so you have a working example on load.
Results
- Expected profit
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Expected graded value
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- ROI
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Verdict
- Returned as a plain value. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the card grading roi calculator work?
Grading fees, shipping, and turnaround only pay off if the graded comp clears the raw price by enough. This shows expected profit weighted by grade odds.
What do I need to enter?
6 values: raw card value, gem-mint (10) comp, grade 9 comp, odds of a 10, odds of a 9, and grading fee + shipping. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the expected profit result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Card Grading ROI Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/card-grading-roi
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/card-grading-roi" target="_blank" rel="noopener">Card Grading ROI Calculator — RevenueLab</a> (2026).</p>
Source: [Card Grading ROI Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/card-grading-roi) (2026).