Calculate the cost of one print attempt
Start with sliced material weight and runtime, then replace those estimates with measurements from completed jobs. Prusa’s calculator separates filament, electricity, labor, machine upkeep, and other costs; the same categories are useful for a small commercial quote.
Here we assume 120 grams of filament at $22 per kilogram and a six-hour print. We assign $0.25 per machine hour for wear and upkeep. Electricity uses an assumed average draw of 120 watts and an assumed $0.18 per kWh. Neither the electricity price nor the wear rate is a U.S. average: use your bill, measurements, and replacement budget.
| Production input | Calculation | USD / attempt |
|---|---|---|
| Filament | 0.12 kg × $22 | $2.64 |
| Machine wear | 6 hours × $0.25 | $1.50 |
| Electricity | 0.12 kW × 6 hours × $0.18 | $0.13 |
| Attempt subtotal | Before failures and hands-on labor | $4.27 |
Convert attempts into successful units
If 10% of attempts fail and each failure consumes a full attempt’s production cost, the success rate is 90%. Divide the unrounded $4.2696 attempt cost by 0.90: expected production cost is $4.744 per successful unit. Multiplying by 1.10 would understate the repeated attempts needed.
This is deliberately a simple loss model. Early failures may use less material and energy; cleanup may add more labor. Track actual failed material, occupied machine time, and recovery work. Add 15 minutes of hands-on labor at $24 per hour ($6) and $1.25 packaging per successful item. The modeled unit cost becomes $11.994, or about $11.99 before channel fees. It excludes shipping, design work, fixed overhead, and taxes.
Solve for a price that leaves a contribution
For an assumed sales channel charging 10% of revenue plus $0.30 per order, and a target contribution margin of 30%, use: price = (unit cost + fixed order fee) ÷ (1 − percentage fee − target margin). These are hypothetical channel fees, not Etsy’s fee schedule.
With unrounded inputs, ($11.994 + $0.30) ÷ (1 − 0.10 − 0.30) = $20.49. Rounding up to the next $0.10 gives $20.50. At that price, the model leaves about $6.16 per order before fixed expenses and income taxes. The denominator must be positive; a fee percentage and target margin adding to 100% cannot produce a finite price.
A 30% markup is different: multiplying cost by 1.30 does not produce a 30% margin, especially after fees. If you pay for shipping, add it to unit cost first. If design work is bespoke, price it separately or allocate its paid time to the actual number of units ordered.
Check machine hours and hands-on hours separately
A six-hour print does not necessarily require six hours of paid labor. It does occupy a machine for six hours, and that capacity limits how many orders you can promise. Measure setup, support removal, finishing, quality checks, packing, and buyer communication as hands-on work.
Batch printing can reduce setup time, but a failed plate can affect multiple units. Validate the batch process before assuming every print-bed position is saleable capacity. Leave room for maintenance and reprints when setting delivery dates; theoretical round-the-clock output is not a production commitment.
Validate the design, sales channel, and offer
Before quoting, check that you can commercially use the model and that the item meets the chosen marketplace’s rules. Those are separate questions. Etsy’s creativity standards say items produced with computerized tools such as 3D printers must be based on the seller’s original design; a downloaded model’s commercial license alone does not establish that requirement.
Choose one use case, make a sample, and quote a small paid batch. Record willingness to pay alongside actual cost per good unit. Use the ROI calculator for initial production economics, then add this guide’s failure, labor, channel, and fulfillment adjustments where the tool does not already include them. Compare the resulting contribution with the hours and cash the order ties up.
Reference: Etsy — Creativity Standards ↗
Common questions
Can I price a print using filament cost times three?
That shortcut does not account for runtime, labor, failures, fulfillment, or selling fees. Build a cost per successful unit and test the resulting offer with buyers.
Does this $20.50 example include shipping?
No. Add the shipping cost you pay before solving for price, and check which fee bases include any shipping charged to the buyer.
Sources & method
Prepared by Maker Business Lab from the primary sources below, checked September 23, 2026. Cost models are our own illustrative calculations, not measured seller earnings, supplier quotes, or market averages. Amounts are rounded for display; formulas use unrounded inputs. Policies and prices can change.
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