How to Price a Product for Profit: Margin, Markup & Break-Even Price

The goal is to set a selling price that covers the costs you expect on the average order and still leaves the profit or margin you actually want. That is a planning question, not a guarantee that customers will pay the number.

A COGS-plus-markup sticker can look tidy and still miss contribution after fees, ads, and refunds. Contribution profit here means leftover after the variable costs of the order—not GAAP gross profit, and not monthly net income after rent and payroll unless you allocate overhead on purpose.

The Product Pricing Calculator works backward from those assumptions. You choose a target expected margin (and optionally a dollar profit per order and a proposed price). The engine solves the selling prices those targets imply. The E-commerce Profit Calculator answers the other direction: given a price and a CPA, what is expected profit?

Selling price is what you charge for the product itself. It is an input you control, not the same thing as profit.

Gross revenue for the order is selling price plus any shipping you collect from the customer. If the item is $50.00 and shipping charged is $0.00, gross revenue is $50.00. If you charge $8.00 for shipping, gross revenue is $58.00. Percentage payment and platform fees apply to that gross amount in this model.

Expected retained revenue is the share of gross revenue you expect to keep after refunds: gross revenue scaled by (1 − refund rate). It is the revenue denominator for expected margin. It is not the same as cash in the bank after every cost.

Profit is what remains after costs. The calculator reports expected profit on an order-average basis: a mix of successful deliveries and refunded orders. Revenue answers “how large was the charge?” Profit answers “after the costs attached to that expected order, did we keep anything?”

These words are often used as if they were the same percentage. They are not.

Profit margin = profit ÷ revenue

Markup is a price increase relative to an underlying cost basis. In everyday retail talk that basis is often COGS alone. Other teams mark up landed cost, or wholesale, or a fully loaded unit cost. There is no single universal markup definition, and this site does not publish a recommended markup percentage.

A simple illustration, independent of the calculator: if an item costs $20.00 and you add a 20% markup, the selling price is $24.00 and leftover is $4.00. Margin on that price is $4.00 ÷ $24.00, about 16.7%—not 20%. A 20% markup is not a 20% margin.

When this guide quotes the Product Pricing Calculator’s markup result, it means the engine’s implied markup: (selling price − base product cost) ÷ base product cost. Base product cost is product cost + fulfillment + packaging + other variable cost + advertising + allocated overhead. Payment fees and platform fees are not in that basis. Implied markup is informational; it does not drive the required-price solver. The solver’s primary goal is expected margin: expected profit ÷ expected retained revenue.

The production engine estimates one expected order. It does not forecast demand, scrape competitors, or pick an “optimal” market price.

Gross revenue is selling price plus shipping charged to the customer.

Payment fee is gross revenue times the payment percentage, plus the fixed payment fee. Platform fee is gross revenue times the platform percentage.

Successful-order profit is gross revenue minus product cost, fulfillment, packaging, other variable cost, advertising, allocated overhead, payment fee, and platform fee.

Refunded-order profit assumes the customer payment is returned, so retained revenue on that path is zero. Remaining costs depend on the loss rates you set for product, fulfillment/packaging, payment fees, and platform fees. Other variable cost, advertising, and allocated overhead are treated as incurred on refunded orders. Defaults of 100% lost are conservative starting points, not a claim that every warehouse scraps the unit or every processor keeps the fee.

Expected profit is the mix: (1 − refund rate) × successful-order profit + refund rate × refunded-order profit.

Expected retained revenue is (1 − refund rate) × gross revenue. Expected margin is expected profit divided by that retained revenue when retained revenue is greater than zero.

Percentage fees grow as the selling price grows, so expected profit is linear in gross order revenue. Required prices are solved from that line. The UI does not guess by iteration, and a simple markup on COGS is not the same equation.

Break-even selling price is the selling price where expected profit is approximately zero under the entered assumptions. Below it, the average order loses money in this model. It is an economic floor, not a recommended retail price.

Because payment and platform percentages apply to gross revenue, raising the price also raises those fees. The engine therefore solves for the gross revenue at which expected profit is zero, then subtracts shipping charged to the customer. If that relationship has no finite nonnegative solution—for example when fees and refunds consume every extra dollar—the calculator reports that break-even is unavailable instead of inventing a price.

Clearing break-even is not a business plan. Overhead, tax, inventory risk, and growth still need funding. Most sellers then price for a target margin or a target dollar profit, which sit above break-even when those targets are achievable.

These figures are an illustration, not recommended prices or fees. They come from the calculator’s default example: proposed selling price $50.00, shipping charged $0.00, product cost $15.00, fulfillment $5.00, packaging $1.00, advertising $10.00 per order, payment fee 2.9% + $0.30, platform fee 0%, 5% refund rate, conservative 100% cost-loss on refunds, a 20% target expected margin, and a $10.00 target profit per order.

At $50.00, a kept order leaves $17.25 after product, fulfillment, packaging, ads, and processing. A refunded order, under full-loss assumptions, keeps no revenue and still bears those costs, for -$32.75.

At a 5% refund rate, expected profit is $14.75 and expected retained revenue is $47.50. Expected margin is 31.1%—expected profit divided by retained revenue, not by the $50.00 sticker and not by COGS.

Break-even is $33.98. That is where expected profit is about zero on the same costs and refund mix. The proposed $50.00 sits above that floor, which is why expected profit is positive. It is still a planning estimate: change CPA, refund rate, or fees and the floor moves.

Target-margin pricing reverse-solves the selling price at which expected profit divided by expected retained revenue equals the percentage you entered. It is not “add that percentage to costs.” Percentage fees and expected refunds both depend on price, so the required price is higher than a naive cost-plus figure for the same percentage.

Using the same default example and a 20% target expected margin:

You need about $42.82 to hold a 20% expected margin on retained revenue. Expected profit at that price is $8.14—not 20% of the $31.00 cost basis, and not 20% of the $50.00 you might have wanted to charge. If fees and refunds consume too much of each extra dollar, the target cannot be solved and the calculator says so instead of inventing an infinite price.

Sometimes the planning question is a dollar leftover per order, not a percentage of revenue: cover a $10.00 contribution target, fund a known overhead allocation, or keep a floor under a low-priced SKU where a high margin still yields a few cents.

The engine solves the same expected-profit line for that dollar amount. A 20% margin and a $10.00 profit per order generally produce different required prices.

In this scenario you need about $44.84 to expect $10.00 per order. That sits between break-even ($33.98) and the proposed $50.00, and it is not the same as the 20% margin price ($42.82). Choose the goal that matches the decision; do not treat the two outputs as interchangeable.

The default example makes the gap concrete. Base product cost in the calculator (product + fulfillment + packaging + other variable + advertising + allocated overhead) is $31.00. Payment and platform fees are not in that basis.

A 20% markup on $31.00 is $37.20. At that price, expected margin is 8.4%—well below 20%—because fees, refunds, and the revenue denominator are not a 20% add-on to cost. The price that actually delivers a 20% expected margin is $42.82.

At the proposed $50.00, implied markup is 61.3% while expected margin is 31.1%. Same order, two percentages, two different questions. Do not copy either figure as a universal rule for other products.

Safe discount is the room between a proposed selling price and the required target-margin selling price. If the proposed price is higher, the difference is the maximum reduction that still meets the selected expected margin under your assumptions. If the proposed price is already at or below that required price, headroom is zero.

From $50.00 down toward $42.82 is about $7.18, or 14.4% off the proposed price. “Safe” means relative to the entered 20% target and these assumptions. It is not a recommended promotion, a guarantee that the discounted price will sell, or a promise the business stays profitable if CPA, refunds, or fees move.

A refund is not only lost sales. In this model the customer payment is returned, so retained revenue on that path is zero, while product, outbound shipping, ads, and often processing fees may already have been spent.

You control how much of product cost, fulfillment plus packaging, payment fees, and platform fees remains after a refund. Defaults assume 100% of those listed costs remain. If you restock inventory or recover fees, lower the loss rates so required prices are not overstated. The model does not claim every business loses every cost on every refund.

A higher refund rate usually raises the selling price required for the same target, because losing orders still consume costs while contributing no retained revenue. Using the same default costs, fees, and 20% target, a 0% refund rate requires about $40.60; at 5% refunds the required price is $42.82. The extra price is what it takes to keep expected margin at 20% after mixing in refunded orders.

Acquisition cost per order reduces contribution. In the Product Pricing Calculator, advertising is treated as incurred on both successful and refunded orders, so it raises break-even, target-margin, and target-profit prices.

Hold the default example fixed except advertising. With $10.00 CPA, the 20% target-margin price is $42.82. With $0.00 advertising, that required price falls to $29.14. Paid acquisition is not a rounding error on a COGS-plus-markup sheet.

If the selling price is already decided and the unknown is how efficiently ads must perform, switch tools. The Break-Even ROAS Calculator and Break-Even ROAS guide solve the advertising ceiling at a known price, rather than solving the price at a known CPA.

• Pricing from COGS alone. Supplier cost is one line. Fulfillment, packaging, fees, ads, and refunds still have to be paid.
• Confusing markup and margin. A 20% markup is not a 20% margin. The calculator’s target is expected margin on retained revenue.
• Ignoring payment processing. The percentage applies to gross order revenue, including shipping you collect.
• Ignoring the fixed processing fee. A $0.30 fee is a large share of a low-priced SKU and still belongs on every card-captured order.
• Ignoring fulfillment and packaging. Free shipping for the customer is a cost decision, not a missing line.
• Forgetting marketplace or platform fees. Enter the rate you pay. Inventing a marketplace fee is worse than leaving the field at zero until you have a sourced number.
• Ignoring advertising. Organic screenshots of “product margin” do not survive paid acquisition.
• Ignoring refunds. Subtracting a refund percentage from revenue understates the damage if you still lose product, shipping, ads, and fees.
• Copying competitor prices without checking economics. Their COGS, fees, refund mix, and ad costs are not yours. A price that works for them can be below your break-even.
• Discounting without recalculating. A sale cuts revenue immediately and changes percentage fees. Costs such as COGS, packing, and CPA often stay the same. Use safe discount against your own target, then re-run the engine.
• Assuming one target margin is right for every business. There is no universal “good” margin or markup. The useful number is the one your costs can support.

Improving the price you need—or the leftover at a price the market will pay—is an operations problem, not a slogan. Changing these levers does not guarantee that customers will accept a higher price or that ads will get cheaper.

• Reduce variable costs. Lower COGS, packaging, or other per-order costs and required prices usually fall.
• Improve fulfillment economics. Carrier, 3PL, or dimensional-weight changes show up on every order, kept or refunded, under full-loss return assumptions.
• Reduce avoidable fees. Use the processing and platform rates you actually pay. Do not invent marketplace fees. If a plan or payout schedule changes, update the inputs.
• Reduce refund losses. Fewer refunds, or recovering more inventory and fees when they happen, improves expected profit and can lower the price required for the same target.
• Improve retained revenue per order. Shipping charged, fewer refunds, or a higher price change expected retained revenue. They also change percentage fees. Run the numbers again rather than scaling margin by hand.
• Review advertising economics. A lower CPA lowers required selling prices here. If price is fixed, compare actual ROAS to break-even ROAS instead of guessing.
• Reconsider positioning. If the economically required price is above what the market will pay, the offer, costs, or channel may need to change. The calculator will not invent demand.

The Product Pricing Calculator asks for shipping charged, product cost, fulfillment, packaging, other variable cost, advertising per order, optional allocated overhead, payment percentage and fixed fee, platform percentage, refund rate, optional refund-loss rates, a target expected profit margin, an optional target profit per order, and an optional proposed selling price.

You get break-even selling price, the selling price required for the target margin, an optional target-profit price, expected profit, expected retained revenue, expected margin, implied markup, and safe-discount headroom when a proposed price is entered. Results are planning estimates, not accounting or tax advice, and not a claim that the solved price will sell.