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
Profit on the lot
$639
Profit per sale
$30.55
Margin per sale
47.0%
Dead stock cost
$216
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How to use this
- 1Enter sourcing cost ($).
- 2Enter expected sale price ($).
- 3Enter platform fee (%).
- 4Enter shipping + supplies ($).
- 5Enter sell-through rate (%).
- 6Enter units sourced.
- 7Read your profit on the lot on the right — it updates as you type.
- 8Hit Share to keep the scenario or send it to someone.
About this calculator
Sourcing cost, platform fees, shipping, and expected sell-through rate combine into realistic profit per sourced item.
Worked example
Using the values the calculator loads with:
Inputs
- Sourcing cost: 18 $
- Expected sale price: 65 $
- Platform fee: 13 %
- Shipping + supplies: 8 $
- Sell-through rate: 70 %
- Units sourced: 40
Results
- Profit on the lot: $639
- Profit per sale: $30.55
- Margin per sale: 47.0%
- Dead stock cost: $216
What each field means
Inputs
- Sourcing cost ($)
- The sourcing cost used in the calculation, measured in $. Starts at 18 $ so you have a working example on load.
- Expected sale price ($)
- The expected sale price used in the calculation, measured in $. Starts at 65 $ so you have a working example on load.
- Platform fee (%)
- The platform fee used in the calculation, measured in %. Starts at 13 % so you have a working example on load.
- Shipping + supplies ($)
- The shipping + supplies used in the calculation, measured in $. Starts at 8 $ so you have a working example on load.
- Sell-through rate (%)
- The sell-through rate used in the calculation, measured in %. Starts at 70 % so you have a working example on load. Accepted range: 1–100 %.
- Units sourced
- The units sourced used in the calculation. Starts at 40 so you have a working example on load.
Results
- Profit on the lot
- 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.
- Profit per sale
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Margin per sale
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Dead stock cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the reseller profit calculator work?
Sourcing cost, platform fees, shipping, and expected sell-through rate combine into realistic profit per sourced item.
What do I need to enter?
6 values: sourcing cost, expected sale price, platform fee, shipping + supplies, sell-through rate, and units sourced. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the profit on the lot 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). Reseller Profit Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/reseller-profit
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/reseller-profit" target="_blank" rel="noopener">Reseller Profit Calculator — RevenueLab</a> (2026).</p>
Source: [Reseller Profit Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/reseller-profit) (2026).