What Actually Drives 3D Print Costs
Four things decide what a print costs. Three are small and measurable. The fourth quietly dwarfs them.
1. Filament — usually 80–95% of the cost
For almost every hobby print, the plastic is the bill. A 200 g PLA print at a typical $25/kg spool price costs exactly $5.00 in material. Filament choice matters less than people think for cost: as of September 2026, US market averages run about $19–$21/kg for PLA, PETG, and ABS, with TPU around $26/kg. See the full filament comparison for the breakdown.
The real filament lever isn't the material — it's how much you use. Infill percentage, wall count, and supports decide grams far more than PLA-vs-PETG ever will.
2. Electricity — real, but small
A typical FDM printer averages roughly 100–150 W while printing. At the 2026 US residential average of about $0.18/kWh, a 10-hour print costs $0.18–$0.27. Even a 30-hour monster print stays under a dollar in most states. (Hawaii and California excepted — check your bill.) Electricity only starts to matter for print farms running dozens of machines.
3. Machine wear — the cost people forget
Nozzles wear out, belts stretch, fans die, and build plates get chewed up. None of it is expensive per print, but it's not zero either. Sellers commonly budget $0.50–$1.00 per print-hour for wear and maintenance. If you print occasionally, you can ignore this. If you sell prints, you can't.
4. Failed prints — the hidden budget-killer
Here's the honest math nobody puts in a calculator: a print that fails at 90% wastes 90% of its filament and 90% of its electricity, and gives you nothing. One failed 200 g print costs more than the electricity for your next twenty successful ones. Wet filament, poor bed adhesion, and optimistic overhangs are the usual culprits — and they're all fixable. A $40 filament dryer often pays for itself by preventing a handful of failures.
Putting it together
Run your own numbers in the 3D printing cost calculator — use your slicer's gram estimate, your actual spool price, and your utility rate. Then read how to reduce cost per print for the levers that actually move the needle.