| Sold | Grade | Monthly Average |
| May 2026 | 3.5 | $19.00 |
| Aug 2026 | 0.3 | $2.65 |
| Aug 2022 | 5.5 | $30.00 |
| Aug 2015 | 4.0 | $21.50 |
| Jan 2012 | 4.0 | $22.10 |
| Apr 2017 | 2.5 | $12.75 |
| Jan 2016 | 2.0 | $10.75 |
| Mar 2015 | 2.0 | $11.50 |
| Jul 2012 | 2.0 | $10.21 |
| Aug 2018 | 1.8 | $11.75 |
| Mar 2026 | 1.5 | $9.80 |
| Mar 2024 | 1.5 | $9.80 |
| Nov 2019 | 1.5 | $9.31 |
| Mar 2013 | 1.0 | $6.30 |
| Aug 2021 | 0.5 | $3.49 |
| Feb 2019 | 0.5 | $3.32 |