| Sold | Grade | Monthly Average |
| Apr 2012 | 7.5 | $15.00 |
| May 2024 | 6.0 | $9.00 |
| Oct 2021 | 6.0 | $9.00 |
| Sep 2023 | 5.0 | $5.70 |
| Feb 2015 | 5.0 | $5.70 |
| Apr 2016 | 4.5 | $5.20 |
| Dec 2009 | 4.5 | $5.20 |
| Dec 2024 | 4.0 | $4.32 |
| Sep 2018 | 4.0 | $6.00 |
| Dec 2017 | 4.0 | $4.32 |
| Nov 2017 | 2.5 | $1.70 |
| Oct 2017 | 2.5 | $1.70 |
| Feb 2014 | 2.5 | $2.80 |
| Jan 2022 | 2.0 | $2.40 |
| Nov 2021 | 2.0 | $2.40 |
| Jul 2019 | 2.0 | $2.40 |
| Feb 2016 | 2.0 | $2.60 |
| Aug 2011 | 2.0 | $2.40 |
| Sep 2011 | 1.5 | $1.60 |