| Sold | Grade | Monthly Average |
| Dec 2025 | 4.0 | $2.50 |
| May 2011 | 9.2 | $9.00 |
| Nov 2017 | 8.5 | $5.32 |
| Apr 2012 | 8.5 | $8.50 |
| Aug 2011 | 8.5 | $7.60 |
| Jan 2024 | 8.0 | $3.00 |
| Jan 2012 | 8.0 | $8.10 |
| May 2012 | 6.5 | $6.60 |
| Jun 2024 | 6.0 | $2.50 |
| Sep 2022 | 6.0 | $7.20 |
| Mar 2016 | 6.0 | $5.40 |
| Mar 2025 | 5.5 | $2.50 |
| May 2019 | 5.5 | $5.49 |
| May 2025 | 4.0 | $2.70 |
| Jan 2018 | 4.0 | $2.75 |
| Jun 2012 | 4.0 | $3.60 |
| Nov 2018 | 3.0 | $3.00 |
| Apr 2018 | 3.0 | $3.00 |
| Apr 2022 | 2.0 | $4.00 |