| Sold | Grade | Monthly Average |
| Mar 2026 | 2.5 | $7.90 |
| Jul 2013 | 9.2 | $20.88 |
| Jun 2015 | 5.0 | $13.25 |
| Aug 2025 | 4.0 | $12.00 |
| Jul 2010 | 4.0 | $7.20 |
| Feb 2023 | 3.5 | $7.60 |
| Aug 2020 | 3.5 | $5.25 |
| Oct 2012 | 3.5 | $7.60 |
| Jun 2010 | 3.5 | $5.00 |
| Dec 2024 | 3.0 | $4.50 |
| Feb 2020 | 3.0 | $5.50 |
| Jan 2020 | 3.0 | $4.20 |
| Dec 2014 | 3.0 | $4.90 |
| Mar 2011 | 3.0 | $5.00 |
| Jan 2011 | 3.0 | $4.75 |
| May 2021 | 2.5 | $3.60 |
| Jan 2014 | 2.5 | $5.00 |
| Dec 2024 | 2.0 | $3.24 |
| May 2024 | 2.0 | $4.80 |
| May 2021 | 2.0 | $3.00 |