| Sold | Grade | Monthly Average |
| Dec 2023 | 3.0 | $15.25 |
| Sep 2021 | 5.5 | $70.00 |
| Mar 2019 | 5.5 | $12.50 |
| Jul 2013 | 5.5 | $11.75 |
| Jan 2017 | 5.0 | $16.50 |
| Nov 2012 | 5.0 | $10.50 |
| Nov 2020 | 4.0 | $24.00 |
| Apr 2010 | 4.0 | $8.00 |
| Mar 2023 | 3.5 | $21.00 |
| Aug 2022 | 3.5 | $17.50 |
| Mar 2022 | 3.5 | $17.50 |
| Dec 2017 | 3.5 | $12.00 |
| Nov 2016 | 3.5 | $12.00 |
| Jul 2016 | 3.5 | $11.40 |
| Jun 2013 | 3.0 | $6.70 |
| Apr 2012 | 2.5 | $5.42 |
| Jun 2012 | 1.5 | $4.50 |