| Sold | Grade | Monthly Average |
| Dec 2009 | 9.2 | $23.00 |
| Jun 2018 | 6.5 | $59.00 |
| Aug 2016 | 6.5 | $23.50 |
| Aug 2016 | 6.0 | $18.05 |
| Aug 2022 | 5.5 | $16.39 |
| Jul 2020 | 5.5 | $17.25 |
| Jun 2017 | 5.5 | $16.39 |
| Oct 2013 | 5.5 | $11.21 |
| Jul 2013 | 4.5 | $11.51 |
| Aug 2019 | 4.0 | $10.00 |
| Aug 2017 | 4.0 | $19.50 |
| Feb 2018 | 2.5 | $29.00 |
| Feb 2015 | 2.5 | $9.12 |
| Jan 2021 | 2.0 | $6.40 |