Cost-to-price walkthrough

Product Pricing Example: Covering Costs and Targeting a Margin

A candle maker is launching a new monthly batch. Pricing from wax and fragrance alone appears profitable, but it ignores packaging, transaction costs, workspace, and operating overhead. This example allocates the complete cost stack before applying a target margin.

Practical example15 min read

Layer every cost before targeting margin

Ember Field produces an 800-candle monthly batch. Wax, fragrance, wick, and vessel total $7.20 per candle. Labels, protective packaging, payment fees, and variable packing labor add $2.80, bringing total variable cost to $10. The company also expects $6,000 of monthly workspace, base payroll, software, insurance, and marketing expense.

At 800 expected units, each candle must carry $7.50 of fixed cost in the planning model. Adding that allocation to the $10 variable cost creates a $17.50 total cost per unit. Because the owner wants profit to equal 30% of selling price, the price is found by dividing cost by 70%, not by adding 30% to cost.

Expected volume is a critical assumption. Fixed cost does not literally attach itself to a candle; the allocation spreads one monthly total over the planned units. If fewer units sell, the realized fixed cost per sold unit rises. A pricing model therefore needs both a cost calculation and a volume scenario.

What we’re calculating

Cost layers to required price

Total unit cost = Variable unit cost + Fixed costs ÷ expected units; Required price = Total unit cost ÷ (1 − target margin)

Variable cost
$7.20 direct + $2.80 other = $10 per candle.
Fixed-cost allocation
$6,000 ÷ 800 = $7.50 per expected unit.
Total cost
$10 + $7.50 = $17.50 per unit.
Target margin
30%, leaving 70% of price available to cover modeled cost.

The calculator restricts the target below 100%, because dividing by zero or a negative cost share would not produce a finite viable price.

Intermediate calculations, step by step

  1. Combine variable cost

    $7.20 + $2.80 = $10 incurred for each candle sold.

  2. Allocate monthly fixed cost

    $6,000 ÷ 800 expected units = $7.50 per unit.

  3. Build total unit cost

    $10 + $7.50 = $17.50.

  4. Price for the margin denominator

    $17.50 ÷ (1 − 0.30) = $25 required selling price.

  5. Project the month

    Revenue = $25 × 800 = $20,000; variable cost = $8,000; fixed cost = $6,000; profit = $6,000.

Worked example

An 800-candle launch batch

All 800 units are assumed to sell at the $25 realized price during the same month in which the $6,000 fixed-cost base is measured.

Fixed costs
$6,000 / month
Variable cost
$10 / candle
Expected sales
800 candles
Target margin
30%
  1. Allocated fixed cost = $6,000 ÷ 800 = $7.50; total cost per unit = $10 + $7.50 = $17.50.
  2. Required selling price = $17.50 ÷ 0.70 = $25; profit per unit = $25 − $17.50 = $7.50.
  3. Projected revenue = $25 × 800 = $20,000; projected variable costs = $10 × 800 = $8,000.
  4. Projected profit = $20,000 − $8,000 − $6,000 = $6,000, which is 30% of revenue.
Result$10 variable cost + $7.50 fixed-cost allocation → $17.50 total cost → $25 price

At the expected volume, 40% of price covers variable cost, 30% covers allocated fixed cost, and 30% becomes projected profit. The layers add to the full $25 rather than making materials carry the entire pricing decision.

What the owner should notice in the cost stack

The $7.20 material figure is less than half of the complete $17.50 cost per expected unit. Packaging and variable selling costs matter, but the $7.50 fixed allocation creates the biggest difference between a material-based shortcut and the complete model.

The target margin is a share of the $25 selling price. Adding 30% to $17.50 would create $22.75, only $5.25 of profit per unit and a 23.08% margin. Dividing by 70% protects the target denominator.

Comparison: a 100% markup on materials

Suppose the maker doubles the $7.20 material cost and charges $14.40. On paper, this creates $7.20 above materials and a 100% materials markup. Across 800 candles, revenue would be $11,520 and the apparent material spread would be $5,760.

But complete variable costs are $8,000 and fixed costs are $6,000, for $14,000 total monthly cost. The materials-only price therefore produces a $2,480 loss: $11,520 − $14,000. A markup can be calculated correctly and still fail the business when its cost base is incomplete.

  • Materials-only price: $14.40.
  • Complete cost at 800 units: $17.50 per unit.
  • Projected result at $14.40: a $2,480 monthly loss, not sustainable profit.

Alternative scenario: only 600 candles sell

If expected sales fall to 600 while fixed costs stay $6,000, allocated fixed cost becomes $10 per unit. Total cost rises to $20, and a 30% target margin requires $20 ÷ 0.70 = $28.57. Volume uncertainty therefore changes the price needed to preserve the modeled margin.

If the owner keeps the $25 price and sells 600 units, revenue is $15,000, variable cost is $6,000, and profit after $6,000 fixed cost is $3,000, or 20% of revenue. The business remains profitable in this scenario, but it misses the 30% target because the fixed base is spread across fewer sales.

Complete model versus shortcut

Full-cost target-margin price

  • Includes $10 of variable cost.
  • Allocates $7.50 of fixed cost at 800 units.
  • Uses price as the margin denominator.
  • Projects revenue and profit for the same period.

Materials-only markup price

  • Uses only $7.20 of the cost stack.
  • Ignores $2.80 of other variable cost.
  • Assigns nothing to $6,000 of fixed expense.
  • Shows a paper spread while the complete month loses $2,480.

Common mistakes

Where the calculation goes wrong

Applying margin as markup

Adding 30% to cost produces a lower margin because cost and selling price are different denominators.

Ignoring fixed costs

Materials can appear covered while workspace, base payroll, insurance, and marketing make the complete result negative.

Using an optimistic unit forecast

A larger expected volume lowers allocated fixed cost. Test a lower-volume case before relying on that allocation.

Confusing list price with realized price

If discounts are routine, use the average amount retained rather than the amount printed on the label.

Action checklist

Before you use the result

  • Separate direct and other variable costs.
  • Use fixed costs from the same planning period.
  • Choose a defensible expected unit volume.
  • Divide by one minus target margin.
  • Reconcile projected profit from total revenue and costs.
  • Test lower sales and discount scenarios.

FAQ

Questions beyond the basic calculation

Should every candle receive the same fixed-cost allocation?

A simple average works for a single-product example. With multiple products, allocate costs using a defensible driver such as production time, space, or expected contribution, and test whether the method changes decisions.

What if customers will not pay $25?

The calculation reveals the price required by the current costs, volume, and target. If the market rejects it, the owner must revisit product design, cost, channel, target margin, or expected volume rather than pretending the requirement disappeared.

Are sales taxes included in projected revenue?

Use revenue the business retains and apply the same convention throughout. Tax collected for a government is generally not operating revenue, but treatment should follow the business’s records and jurisdiction.

Why is expected profit $6,000?

At $25, revenue is $20,000. Subtract $8,000 of total variable cost and $6,000 of fixed cost to leave $6,000, exactly 30% of $20,000 under the scenario assumptions.

Note: This example is educational, not a recommended candle price or margin. Actual demand, taxes, returns, wholesale terms, and cost behavior require business-specific analysis.