| Sold | Grade | Monthly Average |
| May 2026 | 2.0 | $18.00 |
| Jul 2021 | 4.5 | $43.00 |
| Feb 2019 | 4.0 | $21.00 |
| Feb 2019 | 3.5 | $42.00 |
| May 2011 | 3.5 | $27.50 |
| Apr 2013 | 2.5 | $12.00 |
| May 2020 | 1.5 | $15.25 |
| Feb 2015 | 1.5 | $14.65 |
| Dec 2024 | 1.0 | $9.90 |
| Nov 2023 | 1.0 | $11.00 |
| Jul 2013 | 1.0 | $10.25 |
| Mar 2011 | 1.0 | $10.25 |