| Sold | Grade | Monthly Average |
| Feb 2018 | 8.5 | $37.66 |
| Sep 2017 | 8.5 | $21.00 |
| Sep 2018 | 8.0 | $63.00 |
| Aug 2013 | 8.0 | $24.00 |
| Jun 2011 | 8.0 | $24.00 |
| Feb 2023 | 7.5 | $30.00 |
| Apr 2014 | 7.0 | $21.00 |
| Sep 2012 | 7.0 | $21.00 |
| Jun 2019 | 6.5 | $26.00 |
| Sep 2022 | 6.0 | $35.00 |
| Aug 2021 | 5.0 | $26.60 |
| Dec 2020 | 4.0 | $10.75 |
| Aug 2017 | 4.0 | $25.00 |
| Jul 2021 | 3.5 | $20.00 |
| Apr 2017 | 3.5 | $14.25 |
| May 2016 | 3.0 | $11.50 |
| Aug 2024 | 1.8 | $7.20 |