| Sold | Grade | Monthly Average |
| Jun 2026 | 4.5 | $5.00 |
| May 2026 | 4.0 | $3.20 |
| May 2026 | 2.0 | $3.20 |
| Jul 2025 | 4.0 | $3.20 |
| Apr 2025 | 4.0 | $4.20 |
| Dec 2024 | 4.0 | $3.20 |
| Aug 2024 | 3.0 | $6.00 |
| Jan 2022 | 3.0 | $10.50 |
| Jun 2025 | 2.0 | $2.80 |
| Oct 2024 | 2.0 | $2.70 |
| Apr 2021 | 1.0 | $2.90 |
| Aug 2020 | 1.0 | $2.60 |
| Dec 2020 | 0.5 | $2.10 |
| Jul 2020 | 0.5 | $2.00 |
| Mar 2019 | 0.5 | $1.70 |