| Sold | Grade | Monthly Average |
| Sep 2023 | 2.0 | $9.00 |
| Jan 2024 | 1.0 | $7.20 |
| May 2020 | 5.5 | $139.00 |
| Apr 2017 | 5.5 | $27.00 |
| Jul 2021 | 4.5 | $42.00 |
| Oct 2010 | 3.5 | $27.00 |
| Sep 2014 | 3.0 | $30.00 |
| Jun 2011 | 3.0 | $19.75 |
| May 2011 | 3.0 | $19.75 |
| Feb 2016 | 2.5 | $26.50 |
| May 2022 | 2.0 | $14.25 |
| Jul 2019 | 1.8 | $15.25 |
| Jul 2013 | 1.0 | $10.50 |
| Aug 2015 | 0.5 | $7.60 |
| Jun 2021 | 0.3 | $1.90 |