| Sold | Grade | Monthly Average |
| Oct 2023 | 2.0 | $6.00 |
| Sep 2017 | 7.0 | $30.00 |
| Oct 2013 | 7.0 | $29.80 |
| Oct 2012 | 6.0 | $21.00 |
| Feb 2011 | 4.5 | $10.25 |
| Oct 2021 | 4.0 | $9.60 |
| Aug 2021 | 4.0 | $9.60 |
| Aug 2019 | 3.0 | $8.40 |
| Jul 2010 | 3.0 | $5.80 |
| Mar 2010 | 3.0 | $5.51 |
| Jun 2014 | 2.5 | $5.00 |
| Feb 2023 | 2.0 | $6.00 |
| Oct 2021 | 2.0 | $3.60 |
| Sep 2011 | 2.0 | $5.60 |
| Jan 2011 | 2.0 | $4.70 |
| Sep 2010 | 2.0 | $5.00 |
| Dec 2017 | 1.8 | $3.80 |
| Apr 2014 | 1.8 | $4.20 |
| Jul 2012 | 1.8 | $5.00 |
| May 2021 | 1.5 | $2.49 |
| Nov 2019 | 1.5 | $2.24 |
| Jul 2022 | 1.0 | $3.00 |