Printing takes a quite long time. To print an object of ~2.5 cm^3 volume, it will take about an hour with a medium print quality (0.2 mm layer thickness).
The material is not cheap. The 2.5 cm^3 object will consume 1 m of a filament. You will be able to print ~100 copies of the model with one roll of standard filament type (750g), which is ~$58.
If you want to print a large volume or use it for teaching, you will need to source materials from your funding or education funding.