| Sold | Grade | Monthly Average |
| May 2024 | 6.5 | $25.00 |
| Sep 2011 | 9.6 | $53.00 |
| Sep 2010 | 9.6 | $60.00 |
| Sep 2010 | 9.6 | $48.00 |
| May 2012 | 9.4 | $36.00 |
| Feb 2012 | 9.4 | $36.00 |
| Jun 2011 | 9.4 | $48.00 |
| Sep 2010 | 9.4 | $48.00 |
| Feb 2013 | 9.2 | $29.25 |
| Jan 2013 | 9.2 | $30.00 |
| Oct 2012 | 9.2 | $30.00 |
| Sep 2010 | 9.2 | $40.00 |
| May 2013 | 9.0 | $18.00 |
| Dec 2012 | 9.0 | $27.00 |
| Jun 2012 | 8.5 | $26.00 |
| Jul 2014 | 8.0 | $21.00 |
| Sep 2013 | 8.0 | $16.00 |
| Jan 2020 | 4.0 | $2.00 |