The Faber - Castell TRX is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 20 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 2xAAA batteries. Note: Combination slide rule and calculator.
Based on 2 sold computers, the Faber-Castell TRX typically sells for $72.50 (median price).
| Refurbished | Fully Working | Partially Working | Powers On | Untested | Not Working | For Parts | |
|---|---|---|---|---|---|---|---|
| New | — | ~$308 | — | — | ~$247 | — | — |
| Mint | — | ~$254 | ~$190 | ~$178 | ~$203 | — | — |
| Excellent | ~$128 | ~$116 | ~$87 | ~$81 | ~$93 | ~$41 | ~$29 |
| Good | ~$80 | $72 (2) | ~$54 | ~$51 | ~$58 | ~$25 | ~$18 |
| Fair | — | ~$54 | ~$41 | ~$38 | ~$44 | ~$19 | ~$14 |
| Poor | — | ~$40 | ~$30 | ~$28 | ~$32 | ~$14 | ~$10 |
The value of a Faber-Castell TRX is approximately $72 (median sold price) based on 2 recent sales. Values range from $46 for units in fair condition to $99 for mint or sealed units with complete original packaging.
Based on 2 recent sales, a Faber-Castell TRX is worth between $46 and $99, with a median value of $72.