| Sold | Grade | Monthly Average |
| Jun 2011 | 9.4 | $15.00 |
| Aug 2010 | 9.4 | $15.00 |
| Mar 2023 | 8.0 | $19.75 |
| May 2020 | 8.0 | $19.75 |
| Jan 2016 | 8.0 | $22.00 |
| Feb 2011 | 8.0 | $12.00 |
| Apr 2022 | 6.0 | $14.75 |
| Feb 2021 | 6.0 | $14.75 |
| Feb 2020 | 6.0 | $14.75 |
| Nov 2019 | 6.0 | $11.80 |
| Jun 2017 | 6.0 | $14.75 |
| Jan 2016 | 6.0 | $16.00 |
| Jan 2015 | 6.0 | $14.75 |
| Sep 2010 | 6.0 | $9.00 |
| Jun 2013 | 5.0 | $11.00 |
| Nov 2025 | 4.0 | $9.99 |