| Sold | Grade | Monthly Average |
| Mar 2012 | 9.4 | $33.60 |
| May 2013 | 8.0 | $28.40 |
| Dec 2009 | 8.0 | $22.00 |
| Oct 2025 | 6.0 | $17.00 |
| Jan 2022 | 6.0 | $30.00 |
| Mar 2019 | 6.0 | $28.00 |
| Oct 2016 | 6.0 | $17.75 |
| Nov 2024 | 4.0 | $16.50 |
| Aug 2014 | 4.0 | $14.95 |
| Jan 2014 | 4.0 | $14.60 |
| Jul 2010 | 4.0 | $12.00 |
| Oct 2009 | 4.0 | $10.75 |