| Sold | Grade | Monthly Average |
| Jan 2026 | 2.5 | $12.00 |
| Mar 2011 | 8.0 | $17.50 |
| Sep 2023 | 6.0 | $16.00 |
| Mar 2012 | 6.0 | $9.90 |
| Aug 2017 | 5.5 | $11.75 |
| Mar 2011 | 5.5 | $8.90 |
| Aug 2025 | 4.0 | $26.50 |
| Oct 2013 | 4.0 | $6.27 |
| Feb 2013 | 4.0 | $6.60 |
| Jun 2012 | 4.0 | $7.50 |
| Apr 2016 | 3.5 | $7.22 |
| Jul 2013 | 3.5 | $5.42 |
| May 2024 | 3.0 | $28.00 |
| Feb 2018 | 3.0 | $6.70 |
| Sep 2015 | 2.0 | $6.50 |
| Jul 2019 | 1.0 | $2.80 |