| Sold | Grade | Monthly Average |
| May 2025 | 6.0 | $17.00 |
| Mar 2011 | 5.0 | $16.75 |
| Apr 2024 | 4.5 | $10.50 |
| May 2018 | 4.5 | $18.00 |
| Jun 2024 | 4.0 | $9.60 |
| Sep 2017 | 4.0 | $17.50 |
| Aug 2017 | 4.0 | $10.80 |
| Nov 2014 | 4.0 | $13.30 |
| Apr 2024 | 3.5 | $7.60 |
| Jan 2022 | 3.5 | $8.90 |
| Dec 2019 | 3.0 | $8.40 |
| May 2022 | 2.0 | $4.80 |
| Oct 2021 | 2.0 | $4.80 |
| Oct 2020 | 2.0 | $6.00 |
| Aug 2016 | 2.0 | $6.60 |
| Nov 2014 | 1.5 | $6.30 |
| Nov 2010 | 1.0 | $4.49 |