| Sold | Grade | Monthly Average |
| Jan 2026 | 2.5 | $14.25 |
| May 2021 | 5.5 | $30.00 |
| Mar 2013 | 4.5 | $14.30 |
| Aug 2012 | 4.5 | $19.75 |
| Dec 2021 | 4.0 | $29.00 |
| Feb 2017 | 3.5 | $15.75 |
| Apr 2025 | 3.0 | $7.65 |
| Sep 2011 | 3.0 | $12.50 |
| Mar 2023 | 2.5 | $9.10 |
| Dec 2022 | 2.5 | $9.10 |
| Jan 2010 | 2.5 | $8.60 |
| Apr 2018 | 2.0 | $10.75 |
| Nov 2017 | 2.0 | $9.68 |
| Mar 2017 | 2.0 | $10.75 |
| Jun 2016 | 2.0 | $6.17 |
| Apr 2020 | 1.8 | $14.25 |
| Dec 2019 | 1.8 | $8.26 |