| Sold | Grade | Monthly Average |
| May 2026 | 4.5 | $27.00 |
| May 2015 | 6.0 | $3.20 |
| Jul 2013 | 6.0 | $5.95 |
| Jan 2018 | 5.0 | $6.48 |
| May 2015 | 5.0 | $2.49 |
| Jan 2019 | 4.5 | $6.60 |
| Jul 2014 | 4.5 | $6.60 |
| Dec 2021 | 4.0 | $5.70 |
| Sep 2020 | 4.0 | $6.00 |
| May 2015 | 4.0 | $2.10 |
| Jan 2024 | 3.5 | $4.56 |
| Sep 2022 | 3.0 | $4.20 |
| May 2015 | 3.0 | $1.49 |
| Apr 2018 | 2.0 | $3.00 |