| Sold | Grade | Monthly Average |
| Sep 2013 | 9.4 | $5.00 |
| Aug 2012 | 9.4 | $8.00 |
| Jun 2011 | 9.4 | $12.00 |
| Aug 2022 | 8.0 | $12.00 |
| Jan 2018 | 8.0 | $2.85 |
| Oct 2016 | 8.0 | $1.80 |
| May 2015 | 8.0 | $2.60 |
| May 2014 | 8.0 | $6.80 |
| Mar 2014 | 8.0 | $5.83 |
| Dec 2013 | 8.0 | $4.80 |
| Oct 2013 | 8.0 | $4.80 |
| Jun 2013 | 8.0 | $3.20 |
| Sep 2012 | 8.0 | $6.40 |
| Apr 2012 | 8.0 | $6.85 |
| Mar 2012 | 8.0 | $6.40 |
| Dec 2011 | 8.0 | $8.00 |
| May 2017 | 7.5 | $13.01 |
| May 2018 | 6.0 | $2.40 |
| Dec 2014 | 6.0 | $2.40 |
| Jun 2014 | 6.0 | $1.80 |