| Sold | Grade | Monthly Average |
| May 2026 | 4.0 | $48.45 |
| Feb 2026 | 0.3 | $3.10 |
| Mar 2021 | 4.5 | $62.00 |
| Jul 2025 | 4.0 | $47.00 |
| Jan 2023 | 4.0 | $56.00 |
| Jun 2010 | 3.0 | $22.00 |
| Nov 2021 | 2.5 | $39.00 |
| Sep 2018 | 2.5 | $30.00 |
| Apr 2010 | 2.0 | $15.25 |
| Dec 2017 | 1.8 | $28.50 |
| Jan 2017 | 1.8 | $17.58 |
| Sep 2025 | 1.5 | $11.00 |
| Jul 2022 | 1.0 | $11.50 |
| Mar 2022 | 0.5 | $24.95 |