| Sold | Grade | Monthly Average |
| Mar 2013 | 9.4 | $5.50 |
| Feb 2013 | 9.4 | $5.00 |
| Jan 2013 | 9.4 | $5.25 |
| Aug 2012 | 9.4 | $4.00 |
| Jun 2012 | 9.2 | $4.60 |
| Mar 2012 | 9.2 | $4.25 |
| Feb 2012 | 9.2 | $4.00 |
| Jan 2012 | 9.2 | $4.00 |
| Mar 2020 | 8.0 | $8.00 |
| Apr 2013 | 8.0 | $4.40 |
| Sep 2012 | 8.0 | $3.20 |
| Dec 2019 | 7.5 | $6.00 |
| Jun 2019 | 6.0 | $4.80 |