The Hidden Costs of Selling 3D Prints (That Quietly Eat Your Profit)

Ask a 3D-print seller what their prints cost and they'll usually tell you the filament. Filament is the visible cost — the thing on the scale, the line on the receipt. Everything else is invisible until you start losing money.

Here are the costs hiding in your print business, what they actually add up to, and how to stop ignoring them.

The visible cost: material

Filament is what most sellers price around. Weigh the part, multiply by the per-gram rate, done. It's a start — but material is consistently the smallest real cost in most FDM prints. Everything below adds more.

The hidden costs

1. Electricity

A Bambu Lab A1 draws around 100–130W during a print. A 4-hour print at $0.15/kWh costs about $0.07. Easy to dismiss.

But run 200 prints a month and electricity adds up to ~$14/month — $168/year — without ever appearing on a quote. Heating the bed dominates: the initial heat-up spike can far exceed the average wattage during a print.

The full electricity cost breakdown →

2. Machine depreciation and consumables

Your printer will fail. The hotend will clog. The PEI sheet will stop sticking. The belts will stretch. None of this is free.

Consumables to budget for:

Item	Typical replacement	Cost
Nozzle (brass)	Every 3–6 months	$3–8
Nozzle (hardened)	Every 6–12 months	$8–15
Build plate	Every 6–18 months	$20–40
PTFE tube	Every 6–12 months	$5–10

Beyond consumables, the printer itself depreciates. A $300 printer that produces 80 kg of filament before needing major work costs $0.00375 per gram in depreciation. Combined with consumables: budget $0.01–0.02 per gram to cover machine wear.

If you're not pricing wear into every print, your customer is funding your next printer. You're not.

3. Failed prints

Even on a well-dialled printer, some jobs fail — a warped first layer, a spaghetti mid-print, a power cut at hour seven. A 10% failure rate on a 4-hour print means 1 in 10 jobs costs you 4 hours of electricity, wear, and filament with zero usable output.

The fix isn't hoping you don't fail. It's a failure buffer — typically 10–15% added to your base cost (material + electricity + wear). The prints that succeed cover the ones that don't.

4. Your time

This is the most undercounted cost in a print business.

• Slicing and setup: 5–15 min
• Starting, monitoring, removing from bed: 5–10 min
• Post-processing (supports, sanding, cleaning): 5–30 min
• Packaging and labelling: 5–10 min
• Customer communication: 5–15 min

That's 25–80 minutes per order. At $15/h that's $6–20 of labor on every single sale — and most sellers charge $0 for it.

Ignoring labor is how sellers grind through hundreds of orders and end up with less money than a minimum-wage job. How to price your time →

5. Packaging

A loose print in an unmarked box isn't a product. Bubble wrap, a mailer, tissue paper, a sticker, a business card — even at $0.75 each that's $75 per 100 orders. At $2.00 it's $200.

Most sellers either absorb this silently or throw it into a vague "shipping" charge that doesn't actually cover materials. Price it as a named line item.

6. Marketplace fees

If you sell on Etsy, Shopify, or eBay, the platform takes a cut you may not have fully modelled:

Platform	Typical combined fee
Etsy (listing + transaction + payment)	10–12%
eBay (final value + payment)	13–15%
Shopify (payment processing only, basic plan)	2.9% + $0.30

A $30 Etsy sale nets ~$26–27 before packaging or shipping. If your cost is $10 and you charge $30, you're clearing $16–17 — not $20.

Full marketplace fee breakdown with worked examples →

What it all adds up to

Here's the same 50g PLA print, 4 hours, priced two ways:

Cost	Filament × 2 pricing	True-cost pricing
Filament	$1.00	$1.00
Electricity	—	$0.07
Machine wear	—	$0.75
Failure buffer	—	$0.22
Labor (30 min)	—	$7.50
Packaging	—	$1.00
Total cost	$1.00	$10.54
"Price" charged	$2.00	$31.62
Actual margin	50% (fake)	67% (real)

The filament × 2 price looks like a 50% margin. It isn't — because the cost basis excluded six lines. The real margin at $2.00 is deeply negative.

The fix

Name every cost, put a number on it, and include it in your price. The 3D Print Pricing Calculator does this in seconds — enter your filament price, model weight, print time, and labor rate, and it builds the full breakdown with a suggested selling price. It also flags when your margin is too thin or you're selling below cost.

Free. No account needed.