Overview

Work backwards from the profit you want: enter your costs in the Cost tab and the profit target in the Sale tab — the calculator returns the selling price you need to charge. Marketplace fees, payment fees and any additional charges are factored in automatically and shown in the breakdown chart.

Top metrics

• Selling Price — the listing price you need to charge to hit the profit target you set on the Sale tab. Two computed percentages are shown right under the price:
  • Margin — profit ÷ selling price (standard gross margin).
  • Markup — profit ÷ item cost — answers "how much I made on top of what I paid".
• Break Even — the price that exactly covers all costs and fees with zero profit. Anything above this earns money, anything below loses money.

Sale tab — set your profit target

Use the "Drive calculation by:" toggle at the top to choose which of the three fields owns the calculation. The active card is highlighted; the other two stay editable, so typing into any of them also switches the lock automatically.

• Profit — the absolute amount you want to earn on the sale.
• Margin — profit as a percentage of the selling price (margin = profit ÷ price). Comparable across products.
• Markup — profit as a percentage of the item cost (markup = profit ÷ cost). Useful when matching a supplier markup rule.

Cost tab — what fulfilment costs you

• Item Cost — add one or more lines with "Add Item". Pick a product from your inventory to auto-fill the unit cost, or type it manually. Set quantity to multiply; the line total and the badge counter update automatically.
• Shipping Cost — what you actually pay the courier. Saved Shipping Couriers can be selected from the dropdown.
• Sale Channel Charges — marketplace fees as a fixed amount and/or a percentage. Use the Marketplace selector to load average rates for eBay, Amazon, Etsy, Walmart, AliExpress, Mercado Libre, Zalando, Allegro, Shopee, Lazada and Facebook. Your own saved channel fees appear under "My fees" at the top of the list. Values are editable after selection.
• Transaction Charges — payment processing fees (fixed amount and/or percentage). Pick a saved payment provider from the dropdown to pre-fill.
• Additional Charges — add as many extra charges as you need (packaging, handling, regulatory fees, etc.) with "Add Charge". Each line accepts a fixed value, a percentage, or both. The badge counter shows how many lines are active.

Marketplace rates shown in the picker are approximate averages for business sellers — adjust them if your account has custom fees.

Saving values for reuse

Whenever you type a value, a small "Save" link appears next to the field. Click it to save the entry as a preset (Shipping Courier, Channel Fee, Payment Provider or Additional Charge). Saved presets show up in the matching dropdowns on this and the Profit Calculator pages so you do not have to re-enter them.

Breakdown chart

The pie chart on the right shows what share of the calculated price goes to each cost category and how much is left as profit. Hover any segment for the exact amount and percentage. It is the quickest way to see whether your target profit is realistic for the listing.

Workflow tips

• Fill the Cost tab first — until your costs are entered, the calculator only shows fees and the price stays at break-even.
• Use Margin for marketplace pricing (it is what most platforms compare you against) and Markup when matching a markup rule from a supplier.
• To see how a different marketplace would affect your price, swap the Sale Channel Charges preset and watch Price update in real time.
• Need a more detailed view with shipping charged to the buyer and discounts? Use the Profit Calculator instead — it works the other way round (price in, profit out).