| Sold | Grade | Monthly Average |
| Jun 2026 | 3.5 | $12.75 |
| Nov 2011 | 8.0 | $15.29 |
| Nov 2013 | 7.5 | $27.00 |
| Dec 2025 | 4.5 | $17.50 |
| Sep 2016 | 4.0 | $23.00 |
| Jul 2011 | 4.0 | $14.00 |
| Jun 2010 | 4.0 | $9.80 |
| Jan 2010 | 4.0 | $9.80 |
| Dec 2024 | 3.0 | $8.00 |
| Nov 2011 | 3.0 | $10.75 |
| Jan 2022 | 2.5 | $9.60 |
| Sep 2014 | 2.5 | $10.80 |
| Nov 2023 | 2.0 | $7.20 |
| Nov 2012 | 1.8 | $8.20 |
| May 2021 | 1.0 | $4.00 |