| Sold | Grade | Monthly Average |
| Jan 2024 | 8.0 | $2.50 |
| Jun 2020 | 9.4 | $2.00 |
| Apr 2020 | 9.4 | $2.00 |
| Feb 2020 | 9.4 | $2.00 |
| May 2019 | 9.4 | $1.00 |
| Oct 2018 | 9.4 | $1.00 |
| Feb 2018 | 9.4 | $1.70 |
| Apr 2016 | 9.4 | $1.35 |
| Dec 2015 | 9.4 | $1.22 |
| Mar 2011 | 9.4 | $1.10 |
| Oct 2009 | 9.4 | $0.98 |
| Apr 2023 | 8.0 | $2.00 |
| Oct 2022 | 8.0 | $2.00 |
| Sep 2021 | 8.0 | $1.00 |
| Jun 2020 | 8.0 | $2.00 |
| Jan 2014 | 8.0 | $0.90 |
| Apr 2023 | 6.0 | $2.00 |
| Dec 2012 | 6.0 | $0.80 |