| Sold | Grade | Monthly Average |
| Sep 2025 | 3.0 | $6.80 |
| Dec 2015 | 8.0 | $13.00 |
| Nov 2020 | 4.0 | $12.00 |
| Jul 2017 | 4.0 | $8.00 |
| Feb 2015 | 4.0 | $8.60 |
| Apr 2010 | 4.0 | $8.00 |
| Nov 2023 | 3.5 | $6.40 |
| May 2025 | 3.0 | $5.32 |
| Nov 2022 | 3.0 | $5.60 |
| Jan 2012 | 3.0 | $6.30 |
| Mar 2012 | 2.5 | $5.40 |
| Oct 2022 | 2.0 | $4.00 |
| Jul 2017 | 2.0 | $3.00 |
| Jul 2014 | 2.0 | $2.60 |
| Jun 2024 | 1.8 | $3.20 |
| Apr 2023 | 1.8 | $3.20 |
| Mar 2019 | 1.0 | $3.30 |