Pricing guide

How to price products in retail, from cost to price tag

Pricing means deciding, for each item, a number that covers what it cost, delivers the margin the business needs and is still accepted by shoppers comparing prices on the shelf and on screen. This page walks through that whole decision, in the order it happens.

It is neither textbook theory nor a product presentation: it is the calculation any store runs, with the numbers on screen, and what usually goes wrong at each step. Each chapter below opens onto the articles that cover that step in full.

It is also the answer for anyone searching for selling price formation: the two names describe the same job, one in the vocabulary of accounting and the other in that of the people who sell.

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Selling price formation: what the term means and what it covers

The name changes depending on who is speaking, and the work is the same: turning a calculated cost into a number the business can charge.

Selling price formation is the path from the calculated cost to the price charged. It involves four chained decisions: what the item really cost, how much has to be left after everything that applies to the sale, how much the customer is willing to pay and how often that number is redone. None of them is solved with a single percentage applied to the whole catalog.

The word that comes up in every conversation on the subject is markup, and it is the source of most mistakes — not because it is hard, but because it is calculated on cost while the margin the company chases is measured on the sale. They are two different bases for the same difference in reais, and swapping them is what makes a business ask for 30% and get less than half of it.

On the other side of the calculation are two numbers that tell whether the price holds up: the contribution margin of each item, which is how much it leaves to pay for the structure, and the break-even point of the business, which is the volume below which no margin is enough. A price set without both is a price set in the dark, however careful the spreadsheet.

The calculation, with the numbers on screen

An item bought for R$ 28.00, in a business where card fees, commission, tax on revenue and the cost of the payment term add up to 15% of the sale, with an intended contribution margin of 20%.

The calculation, with the numbers on screen
Item purchase cost	R$ 28.00
Freight allocated to the loadCounts as item cost even when it arrives on a separate invoice.	R$ 1.40
Direct cost	R$ 29.40
Expenses on the saleCard fees, commission, tax on revenue and the cost of the term.	15%
Intended contribution margin	20%
Price divisor1 − (15% + 20%). This is the number that avoids inverting the base. Fixed expenses are not part of it: they are allocated afterwards.	0.65
Selling priceR$ 29.40 ÷ 0.65.	R$ 45.23
Contribution left over20.0% of the sale, which is what the calculation promised. This is what pays for the allocation of the structure.	R$ 9.05

The same item priced with the calculation heard most often — "apply 20% on cost" — would come out at R$ 35.28 and leave R$ 0.59, or 1.7% of the sale. The difference is not a matter of opinion about price: it is the percentage having been applied to cost instead of to the sale, on a single item. Across a whole catalog, it is the distance between the result the spreadsheet projects and what the month-end close finds.

The three paths to a price

Cost, value and market answer the same question from different angles. None of the three answers it alone, and using only one is what produces the two most common failures: selling cheap without knowing it and selling high without being able to.

By cost: the price that does not lose money: It starts from what the item consumed and adds the intended margin. It is the calculation that guarantees the floor, and the only one of the three that the business can do with its own data. What it does not answer: whether the customer pays that price — and, when cost is high because of internal inefficiency, it passes that inefficiency on to the price tag.
By value: the price the customer accepts: It starts from what the purchase solves for the buyer: what they would compare it with, what they would stop doing without the product, how much they already paid for something similar. It sets the ceiling, and it is where the margin that the cost calculation leaves on the table sits. What it does not answer: whether that price covers what the item cost.
By market: the price already on the shelf: It starts from what others charge in the same channel. It is the easiest reference to get and the easiest to apply wrongly: the cost of the business on the other side is different from yours, and copying its price means inheriting a cost structure you do not have.
In practice, all three in the same decision: Cost sets the floor, value sets the ceiling and the market says where, between the two, the item sits. A business that only uses the first sells cheap without knowing it; one that only uses the third sells at a loss with a clear conscience. The decision is choosing the position within the range — and having the range calculated is what separates a price from a guess.

The subject in five chapters

The pricing decision in the order it happens. Each chapter opens onto the articles that cover that step in full, with the operation, the numbers and what changed afterwards.

Chapter 1

Cost: what the item consumed before it had a price

Every pricing discussion that starts from the desired margin has already started wrong. The first number is how much the item really cost — and it is almost never the one on the invoice.

A product's cost is the purchase value plus everything it took for it to reach the shelf in condition to be sold: freight, insurance, receiving, storage, handling losses and the tax paid on entry that generates no credit. In a business that receives a load every week, this number changes from one receipt to the next while the price tag stays printed with the cost of the previous purchase.

There is also the cost that arrives on no invoice: the capital tied up in inventory, the space the item takes up, the returns it generates. Ignoring it does not make the expense disappear — it makes it come out of another product's margin, almost always that of the fast-moving item nobody suspects.

Chapter 2

The calculation: from cost to price, without inverting the base

The costliest mistake in selling price formation is not a strategic one: it is applying to cost the percentage that was meant for the sale.

Margin and markup measure the same difference on different bases. Margin is how much is left on the selling price; markup is how much is added to cost. Anyone who wants a 20% margin and multiplies cost by 1.20 ends up with far less than intended, because variable expenses — card, commission, tax on revenue — also apply to the sale, not to cost.

The calculation that does not invert the base is a division, not a multiplication: add up all the percentages that apply to the sale, subtract the total from 100%, and divide the direct cost by the result. That is the divisor markup, and it is what returns a price in which the intended margin actually shows up at month-end close.

Chapter 3

Value: the price the customer is willing to pay

The calculation tells you the minimum price. It does not tell you the maximum, and the decision happens between the two.

A price built from cost alone has a silent flaw: it passes the seller's inefficiency on to the customer and leaves money on the table on every item that would be worth more than it cost. What sets the ceiling is not the spreadsheet — it is what the customer compares it with, what they fail to solve if they do not buy and how much they already paid for something similar.

Value is also where the way the price is written starts to matter. The same number in different ranges changes how the person looking at the tag reads it, and that works both ways: the cent that suggests a deal and the round number that sustains the perception of quality. Neither creates margin on its own, but both decide where, within the range the calculation allowed, the price ends up.

Chapter 4

Demand and the market: what happens after the price changes

A new price is a hypothesis about how demand will react. What separates a decision from a guess is measuring that reaction instead of assuming it.

The same 10% increase knocks down volume on one item and goes unnoticed on another. Anyone who knows how much each item reacts has two pieces of information nobody else has: how far prices can go up without losing sales, and on which items a discount buys enough volume to pay for the margin it cost.

The competitor's price comes in here, with a caveat. It is a market reference, not an instruction: the cost structure of whoever is on the other side is different from yours, and the advertised number may be for another pack size, another city or another seller. Comparing prices first requires making sure the two prices compare the same thing.

Chapter 5

The routine: who reviews the price, when and with what data

Price is not a project that ends. It is a decision that ages with every purchase invoice, and what decides the year's result is how often it is redone.

No business reviews the whole catalog every week, and it does not need to: a minority of items accounts for most of the result, and the review starts with them. The rest comes in by rule — a margin policy per category that recalculates on its own when the cost changes, with exceptions only for what breaks the floor.

What blocks this routine is rarely the formula. It is the data: outdated costs, incomplete records, taxation entered as an average and parallel spreadsheets that disagree with each other. Any data-driven pricing project runs into this before it runs into strategy.

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Both calculations, already done

The calculation above is the one these two tools run, free and with no sign-up: enter cost, taxes and the margin you want, and they return the price.

Questions about how to price products

The doubts that come up before any spreadsheet — including the two whose honest answer is "it depends", with what it depends on written out.

How do you calculate the selling price of a product in retail?

Add up the item's direct cost: the purchase, freight, receiving and the tax paid on entry that generates no credit. Add up separately the percentages that apply to the sale — tax on revenue, card fee, commission and the cost of the payment term you grant — plus the contribution margin you want. Subtract this second total from 100% and divide the direct cost by the result. Fixed expenses stay out of this division: they are allocated afterwards, over what was sold, and what remains of the contribution is the result of the operation.

What is selling price formation?

It is the whole process that goes from the calculated cost to the price charged: surveying the item's real cost, defining the margin the category needs to deliver, doing the calculation on the right base, checking the result against what the market charges and reviewing it when the cost changes. "Selling price formation" is what accounting and manufacturing call it; "how to price products" is what retail searches for. It is the same thing.

What is the difference between markup and profit margin?

The base on which each is calculated. Margin is what is left, measured on the selling price; markup is the addition measured on cost. A 100% markup corresponds to a 50% margin, and it is by confusing the two that a business asks for 30% and gets less than half of it. In practice, what is used to reach the price is the divisor markup, which is already expressed as a share of the sale — and the margin that goes into it is the contribution margin, before the fixed expense allocation. Profit is what remains of it after that allocation.

What margin is considered good in retail?

There is no single number that holds for everyone, and be wary of anyone who publishes one: the margin that sustains a business depends on item turnover, category, tax regime and the fixed expense structure it has to cover. The two comparisons that matter are with your own history and with the business's break-even point — below it, no percentage is good.

Is it possible to price without knowing a product's exact cost?

It is, and it is what most businesses do: the price is inherited from the previous month with an increase on top. What is not possible is knowing whether that item is making or losing money. As long as cost is an estimate, every discussion of margin, discount and promotion is held on a number nobody can verify.

How often does the price need to be reviewed?

Whenever the cost changes — which, in a business that receives a load every week, is more often than any review calendar. The approach that works is not reviewing everything: it is letting a margin rule per category recalculate the catalog on its own when the cost comes in, and reserving human decision for the items that break the floor and for the few that concentrate the result.

Where RevPrice fits

The method is this; what does not fit by hand is repeating it for every item

No step in this guide is hard for a single product. What no team sustains is redoing all five with every new supplier price list, across a catalog with thousands of lines — which is why, in practice, the price ends up inherited from the previous month with an increase on top.

RevPrice does the repeating: with each new cost that arrives from the ERP, it redoes the five steps across the whole catalog and shows what changed in price and why. What is left for human decision is what the rule cannot solve on its own — the item that does not close at the floor, and the one the market forced a second look at.

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