| Sold | Grade | Monthly Average |
| Jun 2015 | 9.4 | $58.98 |
| May 2015 | 9.4 | $55.95 |
| Jan 2015 | 9.4 | $52.21 |
| Nov 2014 | 9.4 | $61.00 |
| Aug 2014 | 9.4 | $54.95 |
| Jul 2014 | 9.4 | $49.46 |
| Apr 2014 | 9.4 | $57.98 |
| Mar 2014 | 9.4 | $54.95 |
| Jan 2014 | 9.4 | $54.95 |
| Apr 2013 | 9.4 | $49.99 |
| Jan 2013 | 9.4 | $49.99 |
| Nov 2012 | 9.4 | $56.50 |
| Oct 2012 | 9.4 | $49.99 |
| Sep 2012 | 9.4 | $54.99 |
| Aug 2012 | 9.4 | $54.99 |
| Oct 2018 | 8.0 | $49.50 |
| Jun 2017 | 8.0 | $56.00 |
| Jun 2016 | 8.0 | $45.00 |
| Oct 2021 | 6.0 | $59.00 |
| Jan 2019 | 6.0 | $42.00 |
| Jun 2018 | 6.0 | $42.00 |