3D Print Price Calculator
A buyer messages asking "how much for this?" and a lot of sellers just guess. They'll say $15 because it feels right, then realize three weeks later they've been losing money on every single one. Pricing a 3D print isn't about feel. It's material, time, labor, and whatever cut a marketplace takes before the money ever reaches your account.
The Real Difference Between Cost and Price
Cost is what the print takes out of your pocket: filament or resin, electricity, machine wear. Price is what someone pays you, and it needs to cover cost plus your actual time plus whatever margin makes the work worth doing. Conflating the two is the single most common mistake new sellers make on platforms like Etsy or eBay.
Labor is the part people forget entirely. Bed leveling, removing supports, sanding, packaging — none of that happens automatically, and none of it is free just because the printer did the "hard part." Even fifteen minutes of cleanup at a fair hourly rate changes the math more than people expect.
FDM Versus Resin: Why the Numbers Aren't the Same
FDM filament typically runs cheaper per gram than resin, and FDM prints rarely need post-curing. Resin, on the other hand, needs washing in isopropyl alcohol and UV curing afterward, both of which cost time and consumables that a pure filament calculation would miss. If you're quoting resin work using FDM assumptions, you're underpricing it.
Let's walk through a real quote. A part needs 60g of PLA at $25/kg, takes 3 hours to print, and needs 30 minutes of cleanup labor at $18/hour. You're selling through a marketplace charging an 8% fee, and you want a 30% margin.
- Material: 60/1000 × 25 = $1.50
- Labor: 0.5 × 18 = $9.00
- Base cost: $1.50 + $9.00 = $10.50
- With 30% margin: $10.50 × 1.30 = $13.65
- Marketplace fee (8% of $13.65): $1.09
- Final listed price: $13.65 + $1.09 = $14.74
That's almost a full dollar over what most people would have quoted on instinct. Labor, not filament, drove most of the cost here — which is true more often than sellers want to admit.
Quoting Batches and Bulk Orders Differently
Per-unit pricing breaks down fast once someone asks for 50 of something. Print farms run multiple machines unattended overnight, so the labor-per-unit drops sharply at volume even though material cost stays flat. If you're quoting a batch, recalculate labor as total cleanup time divided across all units rather than per piece — it almost always lowers your effective price and makes you more competitive for bulk orders without actually losing money.
STL file sales work differently again. You're not printing anything, you're selling a design, so the entire cost structure shifts to design time and a one-time creation cost spread across however many times you expect the file to sell.
Where Marketplace Fees Quietly Erase Margin
Etsy, eBay, and similar platforms typically take a percentage of the sale price plus sometimes a flat listing fee. Marketplace fees stack on top of payment processing fees too, so a "30% margin" quote can shrink to 20% real margin once everything's deducted. Building the fee into your price upfront, rather than absorbing it after the sale, keeps your actual take-home matching what you planned for.
Don't forget about your 3D print calculator for the raw cost side before you even get to pricing — pricing only makes sense once the cost number is right.
FAQs
How do I price 3D prints for a craft fair versus online?
Craft fairs let you skip marketplace fees entirely, so you can either pocket the difference or price slightly lower to be competitive against online listings.
Should resin prints cost more than FDM prints?
Usually yes, because resin material is pricier per gram and requires extra post-processing time for washing and curing that filament prints don't need.
What's a fair hourly labor rate to use?
It depends on your local market and skill level, but many small sellers use somewhere between $15 and $25 an hour for cleanup and finishing work.
How do marketplace fees affect my final price?
They reduce your take-home unless you build the fee percentage into your listed price upfront, which is why adding it after calculating margin matters.
Is it different to price a custom commission versus a stock item?
Custom work usually justifies a higher margin because it includes design or file modification time that a stock item already has covered.
How should I price bulk orders of the same item?
Spread your labor cost across the whole batch rather than per unit, since cleanup and packaging time per piece typically drops at volume.
Do I need to charge for failed prints in my pricing?
Building a small failure buffer into your base cost is reasonable, but it belongs in the cost calculation stage rather than the pricing stage.
Can I sell just the STL file instead of a printed part?
Yes, and the pricing model shifts toward your design time and how many times you expect the file to sell rather than per-print material costs.