| Sold | Grade | Monthly Average |
| Sep 2013 | 9.4 | $20.00 |
| Aug 2013 | 9.4 | $20.00 |
| Jan 2010 | 9.4 | $16.00 |
| Mar 2009 | 9.4 | $16.00 |
| Sep 2008 | 9.4 | $16.00 |
| Oct 2019 | 8.0 | $24.00 |
| Nov 2017 | 8.0 | $24.00 |
| Jul 2014 | 8.0 | $24.00 |
| Aug 2010 | 8.0 | $12.75 |
| Jul 2019 | 6.5 | $19.25 |
| Jan 2010 | 6.5 | $23.00 |
| Aug 2024 | 6.0 | $10.00 |
| Mar 2015 | 6.0 | $21.15 |
| Dec 2011 | 6.0 | $15.00 |
| Sep 2010 | 6.0 | $15.00 |
| Dec 2022 | 4.0 | $11.99 |