| Sold | Grade | Monthly Average |
| Mar 2026 | 6.0 | $15.00 |
| Jan 2017 | 9.4 | $4.30 |
| Jan 2024 | 8.0 | $3.20 |
| Nov 2023 | 8.0 | $3.20 |
| Sep 2022 | 8.0 | $3.20 |
| Apr 2022 | 8.0 | $3.20 |
| Mar 2021 | 8.0 | $2.40 |
| May 2018 | 8.0 | $2.40 |
| Mar 2018 | 8.0 | $2.40 |
| Aug 2017 | 8.0 | $2.40 |
| Mar 2016 | 8.0 | $3.20 |
| Sep 2015 | 8.0 | $1.60 |
| Feb 2011 | 8.0 | $1.60 |
| Jul 2024 | 6.0 | $2.50 |
| Dec 2022 | 6.0 | $2.90 |
| Oct 2022 | 6.0 | $2.40 |
| Sep 2022 | 6.0 | $2.40 |
| Mar 2020 | 6.0 | $2.00 |
| Sep 2019 | 6.0 | $1.95 |
| Oct 2014 | 6.0 | $1.20 |
| Apr 2011 | 4.0 | $0.80 |