The numbers
| Sells for | $45 to $90 |
|---|---|
| Print time | 35 to 60 h |
| Filament | 600 to 1000 g |
| Cost per item | $30.32 |
| Marketplace fees | $6.86 |
| Left per sale | $30.32 |
| Per print hour | $0.64 |
| Demand (niche) | Low |
| Competition | Medium |
| Legal and licence risk | Low |
| Evidence | Seen on Etsy |
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
Profit per print hour2/30
Demand6/25
Low competition12/20
Low legal risk15/15
Evidence quality2/10
Demand and legal risk come from the niche Printed marble runs.
Seen for sale: Marble Mountain Model. Prices change, open the listing to check.
Why it can work
- Low brand or licence risk if the design is your own
- Seasonal demand: Christmas
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
The Etsy listing warns its 0.25 inch metal balls are a choking hazard, so check small-part rules and file terms first. No trademark or takedown was seen, so the risk sits in copying a designer's model. Etsy asks for your own original design, so a licensed file may not qualify.
Check your versionRun your own numbers