| Sold | Grade | Monthly Average |
| Jun 2012 | 9.4 | $22.50 |
| Jun 2018 | 9.0 | $27.00 |
| Oct 2024 | 8.0 | $42.00 |
| Aug 2024 | 8.0 | $42.00 |
| Jul 2021 | 8.0 | $55.00 |
| May 2020 | 8.0 | $48.00 |
| Jan 2018 | 8.0 | $48.00 |
| Apr 2013 | 8.0 | $40.00 |
| Aug 2012 | 8.0 | $20.00 |
| Dec 2022 | 7.0 | $98.00 |
| Apr 2024 | 6.0 | $35.00 |
| Jan 2020 | 6.0 | $36.00 |
| Feb 2020 | 4.0 | $24.00 |