The numbers
| Sells for | $40 to $85 |
|---|---|
| Print time | 32 to 62 h |
| Filament | 700 to 1300 g |
| Cost per item | $34.78 |
| Marketplace fees | $6.39 |
| Left per sale | $21.34 |
| Per print hour | $0.45 |
| Demand (niche) | Medium |
| Competition | Low |
| Legal and licence risk | Low |
| Evidence | Idea to test |
Estimates for one item at the middle of the price range, after filament, power, machine wear, marketplace fees and your time at $15 an hour. Shipping not included. Not sales data.
How the score adds up
Demand and legal risk come from the niche Refillable advent calendars. An idea to test can score 69 at most until someone has seen it for sale.
Why it can work
- Few sellers compared with other products
- Low brand or licence risk if the design is your own
- Seasonal demand: September to November, for delivery before 1 December
Why it might fail
- Under $2 estimated profit per print hour
- Thin public evidence, so treat these numbers with care
Be aware before you sell
Many advent files are free but restricted, and at least one result said it was restricted by licensing terms, so confirm commercial rights per file. Generic trees and houses are low risk, but branded character calendars are not. Etsy asks for your own original design, so a licensed file may not qualify.
Check your versionRun your own numbers
What Etsy shows for this
Etsy tags that match this product, with how many listings in our sample use them, their median price and views. Many listings means crowded; high views at a low price means a busy but cheap market.
| Etsy tag | Listings using it | Median price | Views / month |
|---|---|---|---|
| advent calendar | 5 | $40 | 270 |
| cruise door magnet | 6 | $25 | 1,025 |
| house of the dragon | 5 | $61 | 256 |
| cruise door decor | 5 | $30 | 757 |
| door sign | 5 | $14 | 1,262 |
| door sign name | 4 | $11 | 1,290 |
From a sample of 3,213 Etsy listings tagged as 3D printed, exported 10 and 11 November 2026 with a third-party Etsy research tool. Medians from that sample, so estimates, not sales data. All tags