| Sold | Grade | Monthly Average |
| Mar 2016 | 6.5 | $23.00 |
| Oct 2015 | 6.0 | $13.00 |
| Oct 2013 | 6.0 | $25.00 |
| Jan 2011 | 6.0 | $9.90 |
| Mar 2021 | 5.0 | $10.00 |
| May 2011 | 5.0 | $7.49 |
| Jul 2020 | 4.5 | $10.00 |
| Jun 2010 | 4.5 | $6.90 |
| Mar 2011 | 4.0 | $6.30 |
| Mar 2025 | 3.0 | $10.00 |
| Oct 2024 | 2.5 | $5.00 |
| Mar 2023 | 2.0 | $4.20 |
| Jan 2026 | 1.5 | $3.00 |