| Sold | Grade | Monthly Average |
| Aug 2024 | 5.5 | $26.00 |
| Mar 2018 | 8.5 | $31.00 |
| Jan 2014 | 8.0 | $16.80 |
| Mar 2013 | 8.0 | $16.00 |
| Aug 2012 | 8.0 | $18.05 |
| Feb 2023 | 7.0 | $65.00 |
| Dec 2009 | 7.0 | $14.00 |
| Oct 2014 | 6.5 | $13.00 |
| May 2014 | 6.5 | $13.00 |
| Oct 2023 | 6.0 | $12.00 |
| Sep 2023 | 6.0 | $12.00 |
| Jul 2022 | 6.0 | $12.00 |
| Aug 2020 | 6.0 | $17.00 |
| Jun 2017 | 6.0 | $12.00 |
| Sep 2022 | 5.0 | $10.00 |
| Jul 2022 | 5.0 | $10.00 |
| Oct 2015 | 4.5 | $21.00 |
| Aug 2014 | 4.5 | $9.00 |
| Feb 2010 | 4.0 | $7.98 |
| Jun 2014 | 3.0 | $6.50 |