| Sold | Grade | Monthly Average |
| May 2025 | 3.0 | $11.75 |
| Nov 2024 | 3.0 | $11.75 |
| Jan 2022 | 3.0 | $10.50 |
| Feb 2026 | 2.5 | $9.10 |
| Jul 2020 | 2.0 | $6.80 |
| Jun 2019 | 2.0 | $9.00 |
| Nov 2011 | 2.0 | $5.60 |
| Mar 2019 | 1.8 | $6.10 |
| Jan 2015 | 1.8 | $5.60 |
| Jan 2023 | 1.0 | $4.20 |
| Nov 2009 | 1.0 | $3.49 |
| Sep 2024 | 0.5 | $2.50 |