Short answer
For a one-time event, printing paper inserts yourself is cheaper. For badges staff wear every day, ordered printed plastic at $8.99 or less each usually wins once you count holders, ink, reprints and the time spent lining up sheets.
| Quantity | Plastic | Premium metal-faced | Executive solid metal |
|---|---|---|---|
| 1 to 10 | $8.99 / $9.99 | $12.49 / $13.49 | $15.85 / $16.85 |
| 11 to 20 | $8.59 / $9.59 | $12.09 / $13.09 | $15.45 / $16.45 |
| 51 to 100 | $7.89 / $8.89 | $11.39 / $12.39 | $14.75 / $15.75 |
| 101 to 250 | $7.49 / $8.49 | $10.99 / $11.99 | $14.35 / $15.35 |
| 1,001 and up | $6.49 / $7.49 | $9.99 / $10.99 | $13.35 / $14.35 |