| Sold | Grade | Monthly Average |
| Nov 2024 | 6.0 | $7.80 |
| Apr 2017 | 9.4 | $8.49 |
| Feb 2012 | 8.0 | $6.30 |
| Jul 2011 | 8.0 | $5.60 |
| Aug 2010 | 8.0 | $5.20 |
| Jul 2010 | 8.0 | $4.40 |
| Jun 2010 | 8.0 | $4.40 |
| May 2010 | 8.0 | $4.80 |
| Apr 2010 | 8.0 | $4.80 |
| Jul 2009 | 8.0 | $2.60 |
| Aug 2008 | 8.0 | $2.00 |
| Jul 2008 | 8.0 | $2.00 |
| Jun 2008 | 8.0 | $2.00 |
| Aug 2003 | 8.0 | $4.00 |
| Nov 2023 | 6.0 | $7.41 |
| Nov 2021 | 6.0 | $6.60 |
| Dec 2018 | 6.0 | $3.90 |
| Mar 2018 | 6.0 | $3.90 |
| Dec 2013 | 6.0 | $1.90 |
| Jan 2020 | 4.0 | $2.40 |
| Oct 2016 | 4.0 | $2.40 |
| Nov 2015 | 4.0 | $2.00 |