| Sold | Grade | Monthly Average |
| May 2026 | 2.5 | $21.00 |
| Sep 2023 | 5.5 | $64.00 |
| Nov 2012 | 5.0 | $47.50 |
| Jun 2011 | 5.0 | $52.50 |
| Jul 2022 | 4.5 | $54.00 |
| Oct 2021 | 3.5 | $38.00 |
| Feb 2018 | 2.5 | $19.00 |
| Jul 2016 | 2.5 | $37.00 |
| Jan 2024 | 2.0 | $31.50 |
| Sep 2020 | 2.0 | $41.00 |
| Jan 2019 | 2.0 | $45.00 |
| Sep 2017 | 2.0 | $29.45 |
| Jun 2022 | 1.8 | $29.00 |
| May 2022 | 1.8 | $17.50 |
| Nov 2022 | 1.5 | $17.55 |
| Mar 2025 | 1.0 | $43.00 |
| Sep 2012 | 1.0 | $16.00 |
| Jul 2017 | 0.5 | $8.84 |