| Sold | Grade | Monthly Average |
| Oct 2025 | 1.0 | $5.49 |
| Dec 2022 | 4.5 | $16.00 |
| Mar 2018 | 4.5 | $24.50 |
| Nov 2021 | 4.0 | $18.00 |
| Jun 2020 | 4.0 | $17.50 |
| Nov 2012 | 4.0 | $20.00 |
| Sep 2023 | 3.5 | $6.80 |
| Apr 2022 | 3.5 | $14.00 |
| May 2018 | 3.0 | $12.25 |
| Feb 2016 | 3.0 | $11.20 |
| May 2015 | 3.0 | $6.70 |
| Jun 2014 | 2.5 | $5.70 |
| Nov 2020 | 2.0 | $8.80 |
| May 2025 | 1.0 | $2.70 |
| Jun 2022 | 1.0 | $2.70 |
| Oct 2016 | 0.5 | $2.49 |
| Jan 2015 | 0.5 | $1.60 |