| Sold | Grade | Monthly Average |
| May 2026 | 7.0 | $27.00 |
| May 2011 | 9.4 | $24.00 |
| Mar 2011 | 9.4 | $24.00 |
| Sep 2025 | 8.5 | $55.00 |
| Mar 2023 | 8.0 | $24.00 |
| Mar 2019 | 8.0 | $39.95 |
| Dec 2013 | 8.0 | $3.40 |
| Jan 2021 | 7.5 | $25.00 |
| Jun 2018 | 7.5 | $15.00 |
| Oct 2014 | 7.5 | $7.12 |
| Aug 2010 | 7.5 | $14.25 |
| Nov 2014 | 7.0 | $7.00 |
| Jan 2013 | 7.0 | $13.30 |
| Nov 2013 | 6.5 | $12.99 |
| Jan 2019 | 5.5 | $11.00 |
| Sep 2011 | 3.0 | $6.00 |