| Sold | Grade | Monthly Average |
| Oct 2025 | 1.5 | $13.50 |
| Aug 2022 | 5.5 | $42.00 |
| Jun 2012 | 5.0 | $30.40 |
| Aug 2018 | 4.5 | $33.00 |
| Apr 2016 | 4.5 | $14.50 |
| Apr 2021 | 3.5 | $40.00 |
| Mar 2015 | 3.5 | $24.50 |
| Dec 2014 | 3.0 | $21.50 |
| May 2018 | 2.5 | $25.00 |
| Jan 2016 | 2.5 | $17.25 |
| Oct 2018 | 1.5 | $13.50 |
| Mar 2018 | 1.0 | $9.49 |