| Sold | Grade | Monthly Average |
| Apr 2024 | 2.0 | $4.00 |
| Oct 2017 | 9.0 | $18.50 |
| Nov 2016 | 7.0 | $24.00 |
| Mar 2013 | 6.0 | $13.20 |
| Jul 2023 | 5.0 | $9.60 |
| Oct 2022 | 5.0 | $9.60 |
| Mar 2010 | 5.0 | $5.70 |
| Nov 2021 | 4.0 | $8.00 |
| Oct 2018 | 4.0 | $6.40 |
| Nov 2021 | 3.0 | $6.50 |
| Jul 2013 | 2.5 | $3.10 |
| Jun 2022 | 2.0 | $4.00 |
| Sep 2018 | 2.0 | $2.40 |
| Jul 2018 | 2.0 | $2.40 |
| Oct 2011 | 2.0 | $2.40 |
| Jul 2015 | 1.8 | $1.90 |