| Sold | Grade | Monthly Average |
| Jan 2013 | 9.4 | $8.00 |
| Oct 2011 | 9.4 | $8.00 |
| Jul 2010 | 9.4 | $8.00 |
| Aug 2019 | 9.0 | $31.00 |
| Sep 2020 | 8.5 | $17.00 |
| Mar 2020 | 8.0 | $31.00 |
| Aug 2014 | 8.0 | $6.40 |
| Jul 2013 | 8.0 | $7.05 |
| Aug 2012 | 8.0 | $6.40 |
| Mar 2011 | 8.0 | $6.40 |
| May 2021 | 7.5 | $48.00 |
| Apr 2021 | 7.5 | $35.00 |
| Apr 2022 | 7.0 | $21.00 |
| Mar 2022 | 7.0 | $21.00 |
| Jul 2018 | 7.0 | $19.00 |
| Jul 2022 | 6.5 | $25.00 |
| Sep 2021 | 6.5 | $46.00 |
| Mar 2023 | 6.0 | $58.00 |
| Jan 2011 | 6.0 | $4.80 |
| Mar 2023 | 5.5 | $40.00 |
| Feb 2018 | 4.0 | $8.00 |
| Mar 2011 | 4.0 | $3.20 |