| Sold | Grade | Monthly Average |
| May 2026 | 4.5 | $6.70 |
| Nov 2011 | 8.0 | $5.20 |
| Jul 2025 | 6.0 | $3.50 |
| Jan 2025 | 6.0 | $4.28 |
| Mar 2024 | 6.0 | $2.50 |
| Jul 2022 | 6.0 | $10.50 |
| Aug 2012 | 6.0 | $5.10 |
| Jul 2012 | 6.0 | $5.10 |
| Aug 2011 | 6.0 | $3.90 |
| Sep 2010 | 6.0 | $4.80 |
| Jun 2024 | 5.5 | $2.50 |
| May 2022 | 4.0 | $7.80 |
| Nov 2021 | 4.0 | $5.40 |
| Mar 2019 | 4.0 | $6.50 |
| Jan 2018 | 4.0 | $6.50 |
| Jul 2016 | 4.0 | $3.60 |
| Sep 2022 | 2.0 | $3.90 |
| Oct 2015 | 2.0 | $1.45 |
| Aug 2014 | 2.0 | $3.00 |
| Mar 2013 | 2.0 | $2.00 |
| Aug 2011 | 1.0 | $0.75 |