| Sold | Grade | Monthly Average |
| Jul 2026 | 4.0 | $26.50 |
| Nov 2011 | 6.0 | $32.00 |
| Sep 2024 | 4.0 | $18.00 |
| Oct 2025 | 3.5 | $17.50 |
| Sep 2022 | 3.5 | $10.50 |
| Mar 2021 | 3.5 | $7.00 |
| Nov 2024 | 3.0 | $7.80 |
| Dec 2023 | 3.0 | $13.00 |
| Jul 2020 | 3.0 | $6.10 |
| Jan 2025 | 2.0 | $8.80 |
| Apr 2012 | 2.0 | $14.65 |
| Mar 2019 | 1.5 | $6.56 |
| May 2014 | 1.0 | $7.49 |