| Sold | Grade | Monthly Average |
| Jun 2018 | 6.0 | $6.50 |
| Jul 2012 | 6.0 | $6.00 |
| Oct 2010 | 5.5 | $3.30 |
| Dec 2019 | 5.0 | $4.80 |
| Jul 2020 | 4.0 | $4.00 |
| Mar 2020 | 4.0 | $4.40 |
| Jan 2017 | 4.0 | $3.60 |
| Jun 2017 | 3.5 | $2.80 |
| May 2013 | 3.5 | $3.20 |
| Apr 2025 | 3.0 | $2.80 |
| Dec 2018 | 2.5 | $2.40 |
| Feb 2018 | 2.5 | $2.40 |
| Feb 2025 | 2.0 | $2.38 |
| Feb 2024 | 2.0 | $2.50 |
| Jan 2012 | 2.0 | $2.00 |
| Apr 2023 | 1.0 | $2.38 |