| Sold | Grade | Monthly Average |
| Sep 2023 | 2.0 | $15.00 |
| Jul 2013 | 7.5 | $52.50 |
| May 2016 | 7.0 | $50.00 |
| Feb 2016 | 6.5 | $28.66 |
| Apr 2021 | 6.0 | $42.75 |
| Jun 2012 | 6.0 | $28.00 |
| Aug 2020 | 5.0 | $22.00 |
| Nov 2019 | 5.0 | $22.00 |
| Apr 2016 | 5.0 | $24.00 |
| May 2021 | 4.0 | $18.00 |
| Jul 2012 | 3.5 | $17.50 |
| Jan 2022 | 2.5 | $14.50 |
| Oct 2019 | 2.5 | $14.25 |
| Jul 2013 | 2.5 | $14.30 |
| Apr 2019 | 2.0 | $9.50 |
| Dec 2018 | 2.0 | $11.00 |
| Nov 2010 | 2.0 | $17.50 |
| Jan 2019 | 1.5 | $7.00 |
| Sep 2022 | 1.0 | $7.49 |
| Dec 2021 | 1.0 | $7.49 |
| Feb 2021 | 1.0 | $7.49 |