| Sold | Grade | Monthly Average |
| Nov 2023 | 1.5 | $25.50 |
| May 2016 | 4.5 | $64.00 |
| Sep 2019 | 4.0 | $18.00 |
| May 2017 | 3.5 | $59.95 |
| Dec 2022 | 3.0 | $50.00 |
| Jan 2018 | 3.0 | $27.02 |
| Jul 2020 | 2.5 | $41.33 |
| Nov 2011 | 2.5 | $21.50 |
| Feb 2021 | 1.8 | $33.00 |
| Feb 2018 | 1.8 | $30.00 |
| Aug 2015 | 1.5 | $8.00 |
| Dec 2014 | 1.0 | $23.00 |
| Dec 2019 | 0.3 | $3.60 |
| May 2014 | 0.1 | $4.85 |