| Sold | Grade | Monthly Average |
| Jun 2010 | 6.0 | $13.00 |
| Sep 2021 | 4.0 | $8.80 |
| Jun 2018 | 4.0 | $8.80 |
| Nov 2023 | 2.0 | $4.40 |
| Feb 2023 | 2.0 | $4.40 |
| Dec 2021 | 2.0 | $4.40 |
| Jul 2025 | 1.5 | $3.60 |
| Mar 2010 | 1.5 | $4.20 |
| Aug 2025 | 1.0 | $2.90 |
| Jul 2025 | 1.0 | $2.65 |
| Dec 2021 | 1.0 | $2.60 |
| Nov 2020 | 0.5 | $2.00 |