| Sold | Grade | Monthly Average |
| Jun 2010 | 9.4 | $3.00 |
| Jun 2009 | 9.4 | $1.49 |
| Nov 2008 | 9.4 | $1.49 |
| Sep 2014 | 6.0 | $3.60 |
| Nov 2013 | 6.0 | $3.60 |
| Mar 2010 | 6.0 | $1.60 |
| Jul 2020 | 5.5 | $5.49 |
| Feb 2020 | 4.5 | $4.49 |
| Jun 2018 | 4.5 | $4.49 |
| Mar 2013 | 4.0 | $2.00 |
| Aug 2012 | 4.0 | $2.00 |
| Mar 2012 | 4.0 | $2.00 |
| May 2020 | 3.5 | $3.49 |
| Mar 2016 | 2.5 | $2.95 |