| Sold | Grade | Monthly Average |
| Mar 2026 | 2.0 | $23.00 |
| Sep 2012 | 6.0 | $21.00 |
| Jun 2022 | 5.0 | $60.80 |
| Oct 2021 | 5.0 | $46.00 |
| Sep 2024 | 4.0 | $41.00 |
| Nov 2021 | 3.5 | $29.50 |
| Jan 2022 | 3.0 | $17.10 |
| Aug 2019 | 3.0 | $36.00 |
| Jun 2021 | 2.5 | $26.00 |
| Jun 2017 | 2.5 | $7.00 |
| Oct 2016 | 2.5 | $18.25 |
| Aug 2015 | 2.5 | $23.75 |
| Feb 2024 | 2.0 | $14.50 |
| Feb 2023 | 2.0 | $18.25 |
| Jul 2022 | 2.0 | $20.00 |
| Jun 2015 | 2.0 | $11.60 |
| Mar 2012 | 2.0 | $17.40 |
| Nov 2017 | 1.8 | $13.05 |
| Dec 2022 | 1.5 | $12.75 |
| Aug 2023 | 1.0 | $8.65 |
| May 2023 | 0.5 | $4.00 |