| Sold | Grade | Monthly Average |
| Aug 2013 | 7.5 | $11.55 |
| Jan 2024 | 6.0 | $12.00 |
| Jun 2022 | 5.5 | $5.40 |
| Jul 2019 | 5.5 | $15.50 |
| Oct 2015 | 5.0 | $3.84 |
| Feb 2024 | 4.5 | $3.49 |
| Aug 2024 | 4.0 | $3.20 |
| Mar 2024 | 4.0 | $3.20 |
| Sep 2010 | 4.0 | $3.42 |
| Feb 2024 | 3.5 | $2.49 |
| Mar 2021 | 3.5 | $3.20 |
| Apr 2014 | 3.5 | $2.80 |
| Nov 2023 | 3.0 | $3.30 |
| Nov 2019 | 3.0 | $2.52 |
| Sep 2014 | 3.0 | $2.49 |
| Nov 2017 | 2.5 | $4.80 |
| Dec 2012 | 2.5 | $2.10 |
| Dec 2009 | 2.5 | $3.60 |
| Apr 2019 | 2.0 | $2.40 |
| Feb 2016 | 2.0 | $1.52 |
| Jul 2022 | 1.8 | $2.00 |