Keystone pricing is a retail pricing heuristic that sets the selling price at roughly twice the wholesale or product cost:
Keystone pricingWhat is keystone pricing? Doubling cost produces 100% markup and 50% gross margin
Keystone price = cost × 2 Shopify's current keystone-pricing guidance describes the same basic rule and notes that doubling cost produces a 50% gross margin.
The arithmetic is simple. The terminology is where people often go wrong: doubling a $50 cost to a $100 price is a 100% markup, not a 50% markup. The resulting gross margin is 50%.
The calculation
If cost is $50: Price = $50 × 2 = $100 Gross profit is: $100 - $50 = $50 Markup: $50 profit / $50 cost = 100% Gross margin: $50 profit / $100 revenue = 50% The same $50 of gross profit produces 2 different percentages because markup and margin use different denominators.
Keystone: 2x cost, 100% markup, 50% margin
- Profit ÷ cost
- $50 ÷ $50
- Result
- 100%
- Profit ÷ price
- $50 ÷ $100
- Result
- 50%
Why keystone became useful
A simple multiplier can make retail buying and price-setting fast. If a buyer knows wholesale cost, doubling it creates a predictable starting margin without solving a new pricing model for every item. That convenience is the point. Keystone is a heuristic, not a law of healthy retail economics.
When keystone can be a reasonable starting point
It can be useful when:
- product costs are reasonably well understood
- category price expectations can support the result
- 50% gross margin provides enough room for the business's other costs
- the merchant needs a consistent first-pass ticket price across many products
Even then, treat the result as a candidate price to evaluate, not an automatic final price.
High fulfillment or service cost
2 products with the same $50 product cost can have radically different shipping, installation, support, or return economics.
Competitive/reference-price constraints
If comparable products sell around $70, a $100 keystone price may be unrealistic unless the offer is differentiated.
Low-price products
A low-cost item may need more than 100% markup because per-order handling costs consume a large share of revenue.
High-price products
A 50% gross margin on a very expensive item may create a price far above customer willingness to pay even though the arithmetic looks attractive.
Perishability or inventory risk
A merchant may accept lower initial margin to move inventory faster, or require higher margin to compensate for markdown risk.
Keystone versus target-margin pricing
Keystone fixes the cost multiplier at 2.0. Target-margin pricing starts from the margin you actually require: Price = cost / (1 - target margin) For a 60% target gross margin and $50 cost: $50 / (1 - 0.60) = $125 That price is a 150% markup and 60% margin. Keystone is therefore one point on a broader margin curve, not a unique pricing principle.
Keystone versus MSRP
Keystone uses the merchant's cost as an input. MSRP is a price suggested by a manufacturer. They can coincide, but they come from different directions.
A merchant may receive a $100 MSRP for an item that costs $50, which happens to match keystone. That does not make MSRP mathematically derived from keystone, nor does it mean the merchant is always required to charge $100.
Keystone versus compare-at price
A compare-at/reference price is a price presented to establish a discount comparison. Keystone is a cost-based pricing heuristic. Do not create an artificial compare-at price by doubling cost merely so a lower selling price looks discounted. Reference-price advertising has legal implications and must reflect applicable rules and truthful pricing practice.
Worked example
Suppose cost is $50 and keystone price is $100.
- At full price:
- gross profit = $50
- gross margin = 50%
- A 20% discount creates an $80 selling price:
- gross profit = $30
- gross margin = 37.5%
- markup = 60%
The original "50% margin" does not survive the discount. This is why a merchant who plans frequent promotions may need a different initial price, stricter discount limits, or a more explicit contribution-profit model.
Common mistakes
- It is a 100% markup that produces a 50% gross margin
- Gross margin still has to support other costs
- A discounted keystone item can fall well below 50% margin
- A cost formula does not make a price a truthful former or market price
Keystone pricing checklist
- Before accepting a keystone price, ask:
- What gross margin does this actually create after the product cost definition we use?
- What happens after normal discounts?
- Does the market support this price?
- Does the remaining gross profit cover the category's fulfillment, returns, acquisition, and operating burden?
- Is inventory velocity more important than maximizing unit margin?
- If the answers fit, keystone can be a useful shortcut. If not, the shortcut has done its job by giving you a starting point to reject
Questions we get asked
Is keystone pricing always exactly 2x cost?
The classic rule is doubling cost. In practice, merchants may use the term loosely for cost-based retail multipliers, but if precision matters, state the actual multiplier and resulting margin.
Does keystone include shipping and duties?
It depends on what the merchant calls "cost." If landed cost is the economic basis, using only supplier invoice cost can overstate the true margin. Define the cost input.
Is keystone still useful in ecommerce?
It can be a fast starting heuristic, but ecommerce makes it especially important to account for category competition, shipping, returns, marketplace fees, acquisition costs, and frequent promotion.
What margin does a 2.5x multiplier create?
If price is 2.5 times cost, markup is 150% and gross margin is 60%, assuming the chosen cost is COGS and no other revenue adjustments are involved.
OnVoard's take
Keystone is valuable because it is simple enough to inspect. Keep it that way. Use 2x cost as a candidate price, calculate the real markup and margin explicitly, then test whether the category economics and market justify it. The mistake is not using a heuristic; it is forgetting that it is one.
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