| Sold | Grade | Monthly Average |
| Dec 2017 | 8.0 | $10.50 |
| Jul 2013 | 8.0 | $3.20 |
| May 2025 | 6.0 | $11.40 |
| Mar 2020 | 6.0 | $4.00 |
| Aug 2011 | 6.0 | $2.10 |
| Oct 2012 | 5.5 | $1.62 |
| Mar 2024 | 4.0 | $3.00 |
| Dec 2023 | 4.0 | $3.00 |
| Jun 2022 | 4.0 | $3.00 |
| Sep 2021 | 4.0 | $3.00 |
| Jul 2021 | 4.0 | $3.00 |
| Feb 2020 | 4.0 | $2.85 |
| May 2010 | 4.0 | $1.49 |
| Oct 2018 | 3.5 | $2.40 |
| Jan 2013 | 3.5 | $1.20 |
| Dec 2010 | 3.5 | $1.10 |
| Aug 2013 | 3.0 | $1.10 |
| Feb 2022 | 2.0 | $2.00 |
| Sep 2020 | 2.0 | $2.00 |
| May 2019 | 2.0 | $1.70 |
| Mar 2015 | 1.5 | $1.10 |
| Aug 2016 | 1.0 | $1.35 |