| Sold | Grade | Monthly Average |
| Sep 2026 | 3.5 | $10.00 |
| Jul 2017 | 4.5 | $6.10 |
| Mar 2011 | 4.0 | $20.00 |
| Jan 2023 | 3.5 | $11.00 |
| Feb 2019 | 3.5 | $16.00 |
| Feb 2015 | 3.5 | $11.00 |
| Nov 2021 | 3.0 | $9.80 |
| Sep 2019 | 3.0 | $10.45 |
| Mar 2013 | 3.0 | $8.25 |
| Oct 2017 | 2.5 | $3.20 |
| Apr 2022 | 2.0 | $7.00 |
| Mar 2020 | 2.0 | $8.00 |
| Nov 2013 | 2.0 | $9.00 |
| Nov 2019 | 1.5 | $5.04 |
| Jan 2014 | 1.5 | $7.35 |
| Jul 2022 | 0.3 | $2.00 |
| Feb 2019 | 0.3 | $1.70 |