| Sold | Grade | Monthly Average |
| Oct 2026 | 4.5 | $4.49 |
| Jul 2015 | 9.4 | $10.00 |
| Apr 2014 | 9.4 | $6.00 |
| Dec 2013 | 9.4 | $4.88 |
| Nov 2013 | 9.4 | $5.00 |
| Oct 2013 | 9.4 | $5.45 |
| Sep 2013 | 9.4 | $5.17 |
| Aug 2013 | 9.4 | $5.00 |
| Nov 2015 | 9.0 | $8.55 |
| Aug 2021 | 8.5 | $9.40 |
| Nov 2015 | 8.5 | $8.49 |
| Dec 2018 | 8.0 | $5.20 |
| Mar 2017 | 8.0 | $5.60 |
| May 2016 | 8.0 | $8.00 |
| May 2015 | 8.0 | $8.20 |
| Apr 2015 | 8.0 | $7.60 |
| Jan 2015 | 8.0 | $6.00 |
| Apr 2014 | 8.0 | $4.80 |
| Mar 2022 | 6.0 | $6.00 |
| Jan 2019 | 6.0 | $4.49 |
| Sep 2014 | 6.0 | $4.20 |