| Sold | Grade | Monthly Average |
| Oct 2023 | 1.0 | $6.64 |
| Sep 2017 | 5.5 | $66.00 |
| Jun 2020 | 5.0 | $46.00 |
| Feb 2023 | 4.0 | $31.50 |
| Mar 2017 | 4.0 | $19.00 |
| Jun 2020 | 2.5 | $22.00 |
| Apr 2018 | 2.5 | $17.81 |
| Jul 2019 | 2.0 | $21.00 |
| Oct 2015 | 2.0 | $15.25 |
| Dec 2018 | 1.8 | $13.06 |
| Oct 2016 | 1.8 | $13.50 |
| Jun 2021 | 1.5 | $9.70 |
| Oct 2016 | 1.5 | $11.75 |
| Aug 2011 | 1.5 | $12.50 |
| Sep 2015 | 1.0 | $5.10 |
| May 2013 | 1.0 | $10.00 |
| Jul 2012 | 0.5 | $5.15 |