---
title: "Resale Profit Calculator for Sellers | Northwind Finds"
description: "What a resale really earns after platform and payment fees and shipping: profit, margin, return on cost and break-even price, using your own fees."
url: https://northwindfinds.shop/
---

# Resale profit calculator

That jacket cost you $8 at the flea market. After the platform takes its cut, the payment fee comes off and the label is paid, what is left? Put in your own numbers and see.

Your profit

$28.31

on a $45.00 sale + $6.50 shipping

Where the buyer's $51.50 goes

Item & other costs Shipping label Fees Profit

### The sum

- Buyer pays$51.50
- Platform fee (10% of item + shipping)−$5.15
- Payment fee (3% of item + shipping + $0.30)−$1.85
- Shipping label−$7.20
- What you paid for it−$8.00
- Other costs−$1.00
- Profit$28.31

Shipping costs you $0.70 more than the buyer pays for it.

Estimates from the figures you enter. Not financial or tax advice.

## What a sale really leaves you

Enter what you paid for the piece, what it sells for and what the buyer pays for shipping. Then add what the sale costs you: the shipping label, packaging or cleaning, and the fees. Selling platforms usually take a percentage of the sale, sometimes plus a fixed amount per order, and payment processing can add its own percentage and fixed fee. Rates differ between platforms and change, so the boxes start with neutral example values: replace them with the figures from your platform's current fee page, and save them as a set to reuse.

Profit = buyer pays − fees − shipping label − item cost − other costs
Margin = profit ÷ buyer pays
Return on cost = profit ÷ (item cost + other costs)

The break-even price is the item price at which the sale leaves exactly nothing; below it, you pay to sell. Set a profit goal to see the price that reaches it.

## More tools for the market stall

From the first photo to the last sale.

- [Listing builder](https://northwindfinds.shop/listing-title-description-builder/): A title that fits your character limit and a tidy description, ready to copy.
- [Condition grading guide](https://northwindfinds.shop/condition-grading-guide/): A clear seven-step scale, a picker that suggests the grade, and what to disclose.
- [Measuring guide](https://northwindfinds.shop/how-to-measure-for-listings/): Where to put the tape on tops, trousers, shoes, bags and small furniture, with diagrams.
- [Thrift price log](https://northwindfinds.shop/thrift-price-log/): Log buys and sales, see stock and profit totals, and export to a spreadsheet.

## Recommended

Two free services that help when you buy and sell online.

Disposable email · no sign-up

### CleanTempMail

Auction newsletters, estate-sale mailing lists, saved-search alerts and that new resale app you only want to try all ask for an email address. CleanTempMail gives you a free temporary inbox straight away, with no sign-up, a random or custom address on hundreds of domains, and messages deleted automatically after 3 days.

Keep your main inbox for buyers.

[Get a temporary inbox](https://cleantempmail.com/)

Disposable cloud browser · free domain lookup

### WebTraceCheck

A message with a link to "confirm your payment" or "verify your account" is worth a second look. WebTraceCheck's disposable cloud browser opens links on an isolated desktop that is deleted after each session, and its free DNS and domain lookup shows the details behind an unfamiliar domain.

Nothing to install, with free time every day.

[Try WebTraceCheck](https://webtracecheck.com/)

## Questions

**Are fees charged on shipping too?**

It depends on the platform: some take their percentage on the item price only, others on everything the buyer pays, shipping included. Check your platform's fee page and set the switch to match.

**Why is the return on cost so high on cheap finds?**

It divides profit by what you spent, so a $2 find that earns $20 shows 1,000%. That helps when deciding what to buy, but the profit in money tells you more about whether a sale was worth your time.

**Does this include tax?**

No. Sales tax collected by a platform and income tax on your profits depend on where you live and how much you sell. Check the rules with your tax authority.