Tools & workflows
Introducing the ResellThrifts Profit Calculator
Use the free calculator to estimate the money left after fees, inventory cost, shipping, and other expenses.
Updated October 19, 2026: The free calculator now includes US marketplace presets, breakeven and target prices, and worked examples you can load. No account required.
Open the free reseller profit calculator ↗ See the worked examples
Introducing the ResellThrifts eBay Profit Calculator: Estimate Your Profit After Fees and Costs
If you’ve ever wondered “Am I really making money on this flip?”, you’re not alone. One of the biggest challenges resellers face is calculating actual profit after fees, shipping, and cost of goods. That’s why we built the ResellThrifts Profit Calculator — a free, easy-to-use tool designed specifically for resellers like you.
Why Profit Calculators Matter for Resellers
When you sell on platforms like eBay, Poshmark, Mercari, or Depop, each marketplace has its own fee structure. Add in shipping costs, promoted listing fees, and payment processing charges, and it’s easy to misjudge your margins.
Without clear numbers, you risk underpricing, sourcing the wrong inventory, or worse — selling at a loss.
The ResellThrifts Profit Calculator makes those costs visible as you enter them. Estimates exclude income tax, future returns and business overhead unless you account for them separately. The tool displays margin, not ROI.
What the Reseller Profit Calculator Does
The tool lets you quickly plug in your numbers and see:
- Estimated Profit — seller revenue after the fees and costs you enter
- Profit Margin % — estimated profit as a percentage of seller revenue
- Total Fees — marketplace + payment + promotion fees combined
- Breakeven Price — the lowest you can price an item without losing money
- Target Item Price — the minimum price to meet both your profit and margin goals
It updates live as you type, so you can run “what-if” scenarios in seconds.
Built for Resellers, Not Just Sellers
There are plenty of generic calculators out there, but they’re often clunky or outdated. We built this tool with resellers in mind:
- Customizable presets for eBay, Poshmark, Mercari, and Depop
- Promoted listings % input so eBay sellers can factor in advertising spend
- Other costs / shipping discount field for seller-paid discounts and expenses
- Other costs entry for poly mailers, labels, or extra handling expenses
Whether you’re a part-time seller cleaning out closets or a full-time reseller running thousands of listings, this calculator adapts to your workflow.
How to Use It
- Head to the ResellThrifts Profit Calculator.
- Choose your marketplace preset or enter your own fee structure.
- Plug in your sale price, COGS, shipping cost, and any extras.
- Watch your profit, margin, and breakeven update instantly.
It’s that simple.
Why We Made It Free
At ResellThrifts, our mission is to provide tools, guides, and resources that help resellers grow profitable businesses. This calculator is just one piece of that vision. The more you understand your numbers, the better decisions you’ll make — from sourcing smarter to scaling faster.
Try It Now
Stop guessing your margins. Run the numbers with the ResellThrifts Profit Calculator and estimate what remains after your entered costs.