| Sold | Grade | Monthly Average |
| Apr 2026 | 8.0 | $9.00 |
| Jan 2018 | 7.0 | $2.49 |
| Dec 2014 | 6.0 | $1.80 |
| Dec 2010 | 6.0 | $1.80 |
| Apr 2012 | 5.5 | $1.80 |
| Oct 2025 | 4.0 | $2.65 |
| Jun 2024 | 4.0 | $2.50 |
| Aug 2023 | 4.0 | $2.50 |
| Nov 2021 | 4.0 | $2.00 |
| Apr 2021 | 4.0 | $2.00 |
| Aug 2020 | 4.0 | $1.00 |
| Oct 2015 | 4.0 | $1.35 |
| Dec 2014 | 4.0 | $1.20 |
| Aug 2014 | 3.5 | $1.10 |
| Nov 2011 | 2.0 | $1.10 |
| Jan 2008 | 2.0 | $1.90 |