| Sold | Grade | Monthly Average |
| Oct 2013 | 8.5 | $32.40 |
| Feb 2014 | 8.0 | $30.00 |
| Jan 2011 | 8.0 | $26.00 |
| Jun 2022 | 7.5 | $10.50 |
| Oct 2020 | 7.0 | $27.00 |
| Jul 2022 | 6.0 | $9.00 |
| Nov 2018 | 6.0 | $9.98 |
| Apr 2018 | 6.0 | $10.50 |
| Apr 2022 | 5.5 | $16.00 |
| Mar 2021 | 3.0 | $17.50 |
| May 2018 | 3.0 | $2.80 |
| Mar 2016 | 2.5 | $6.00 |
| Feb 2016 | 2.0 | $5.50 |
| Sep 2021 | 1.8 | $8.00 |