| Sold | Grade | Monthly Average |
| Apr 2013 | 9.2 | $40.00 |
| Aug 2011 | 9.2 | $15.00 |
| May 2013 | 6.0 | $14.25 |
| Mar 2014 | 5.0 | $21.50 |
| Jun 2013 | 5.0 | $20.00 |
| May 2013 | 5.0 | $22.00 |
| Apr 2014 | 4.5 | $4.84 |
| May 2013 | 4.5 | $19.80 |
| Mar 2014 | 4.0 | $16.00 |
| May 2013 | 4.0 | $9.60 |
| Jun 2013 | 3.5 | $14.00 |
| Apr 2013 | 3.5 | $5.00 |
| Apr 2013 | 3.0 | $4.30 |