| Sold | Grade | Monthly Average |
| Feb 2013 | 9.6 | $9.00 |
| Jul 2012 | 9.6 | $11.85 |
| May 2012 | 9.6 | $10.50 |
| Apr 2012 | 9.6 | $10.50 |
| Mar 2012 | 9.6 | $11.80 |
| Dec 2011 | 9.6 | $10.50 |
| Nov 2011 | 9.6 | $7.49 |
| Feb 2020 | 9.4 | $4.00 |
| Dec 2011 | 9.2 | $7.00 |
| Apr 2017 | 8.0 | $2.40 |
| Nov 2015 | 8.0 | $6.00 |
| Feb 2014 | 8.0 | $4.00 |
| Jul 2025 | 6.0 | $2.65 |
| Apr 2017 | 6.0 | $1.80 |
| May 2015 | 6.0 | $2.60 |