| Sold | Grade | Monthly Average |
| Sep 2020 | 5.5 | $17.25 |
| Jul 2013 | 5.5 | $10.75 |
| Jul 2016 | 4.5 | $11.00 |
| Jul 2013 | 4.0 | $8.00 |
| Dec 2009 | 4.0 | $7.98 |
| Jan 2021 | 3.5 | $8.20 |
| Jun 2018 | 3.5 | $10.25 |
| Mar 2017 | 3.5 | $8.00 |
| Sep 2014 | 3.5 | $6.40 |
| Jan 2024 | 3.0 | $7.20 |
| Aug 2023 | 3.0 | $7.20 |
| Nov 2017 | 2.5 | $5.40 |
| Mar 2025 | 2.0 | $4.85 |
| Mar 2022 | 2.0 | $5.10 |
| Mar 2020 | 2.0 | $5.10 |
| May 2012 | 2.0 | $3.80 |
| Mar 2021 | 1.8 | $4.10 |