| Sold | Grade | Monthly Average |
| Aug 2012 | 9.4 | $4.00 |
| Feb 2012 | 9.4 | $4.00 |
| Dec 2011 | 9.4 | $3.99 |
| Oct 2019 | 8.0 | $8.00 |
| Jan 2019 | 8.0 | $7.60 |
| Jul 2018 | 8.0 | $6.80 |
| May 2018 | 8.0 | $5.60 |
| Mar 2018 | 8.0 | $4.40 |
| Jul 2016 | 8.0 | $6.40 |
| Sep 2013 | 8.0 | $5.60 |
| Apr 2013 | 8.0 | $5.30 |
| Jan 2013 | 8.0 | $4.00 |
| May 2012 | 8.0 | $3.20 |
| Apr 2012 | 8.0 | $3.20 |
| Jun 2025 | 6.0 | $4.20 |
| May 2025 | 6.0 | $4.20 |
| Jan 2025 | 6.0 | $4.20 |
| Sep 2023 | 6.0 | $3.90 |
| Jul 2021 | 6.0 | $4.80 |
| Feb 2019 | 6.0 | $4.80 |
| Apr 2015 | 6.0 | $4.49 |
| Jul 2014 | 6.0 | $3.90 |