| Sold | Grade | Monthly Average |
| Apr 2023 | 5.5 | $25.50 |
| May 2022 | 4.0 | $10.45 |
| Jun 2016 | 3.5 | $11.00 |
| Jun 2014 | 3.5 | $6.50 |
| Apr 2013 | 3.5 | $4.60 |
| Jun 2021 | 3.0 | $4.90 |
| Aug 2020 | 3.0 | $4.90 |
| Dec 2013 | 3.0 | $4.00 |
| May 2021 | 2.5 | $4.20 |
| Nov 2021 | 2.0 | $3.49 |
| May 2020 | 2.0 | $3.49 |
| Mar 2020 | 2.0 | $3.49 |
| Mar 2016 | 1.8 | $4.50 |
| Jun 2014 | 0.1 | $1.20 |