| Sold | Grade | Monthly Average |
| Sep 2024 | 4.5 | $8.80 |
| Feb 2014 | 6.5 | $19.25 |
| Apr 2021 | 5.5 | $10.75 |
| Jan 2019 | 4.0 | $9.00 |
| Feb 2017 | 4.0 | $10.00 |
| Jul 2016 | 4.0 | $10.00 |
| Aug 2020 | 3.5 | $3.20 |
| Nov 2019 | 3.5 | $3.60 |
| Sep 2019 | 3.5 | $4.80 |
| Jan 2020 | 3.0 | $3.49 |
| Oct 2014 | 3.0 | $4.55 |
| Mar 2013 | 3.0 | $5.80 |
| Oct 2011 | 3.0 | $5.80 |
| Jun 2013 | 2.5 | $5.00 |
| Nov 2010 | 2.5 | $5.00 |
| Apr 2016 | 2.0 | $4.90 |
| Jan 2015 | 2.0 | $3.00 |
| May 2014 | 2.0 | $3.25 |
| Jun 2020 | 1.8 | $2.00 |
| Oct 2015 | 1.8 | $2.40 |
| Mar 2016 | 1.0 | $2.00 |