| Sold | Grade | Monthly Average |
| Jun 2014 | 9.4 | $5.00 |
| Mar 2012 | 9.4 | $3.70 |
| Dec 2009 | 9.4 | $3.30 |
| Jul 2017 | 8.0 | $1.53 |
| Jan 2016 | 8.0 | $4.00 |
| Sep 2015 | 8.0 | $4.00 |
| Sep 2013 | 8.0 | $3.96 |
| Aug 2010 | 8.0 | $2.40 |
| Jul 2023 | 7.0 | $8.30 |
| Aug 2019 | 6.0 | $2.60 |
| Aug 2017 | 6.0 | $1.70 |
| May 2013 | 6.0 | $3.60 |
| Sep 2024 | 5.0 | $5.00 |
| Sep 2017 | 4.0 | $1.95 |
| Mar 2016 | 4.0 | $2.00 |