| Sold | Grade | Monthly Average |
| Mar 2026 | 4.5 | $40.00 |
| Feb 2021 | 5.5 | $16.00 |
| Dec 2016 | 5.5 | $6.00 |
| Dec 2015 | 5.5 | $6.00 |
| Dec 2018 | 5.0 | $14.25 |
| Feb 2010 | 5.0 | $10.50 |
| Jul 2023 | 4.0 | $12.00 |
| Apr 2016 | 3.5 | $8.80 |
| Jun 2025 | 3.0 | $41.00 |
| Aug 2014 | 3.0 | $9.02 |
| Apr 2014 | 3.0 | $9.49 |
| Jun 2019 | 2.5 | $7.90 |
| Sep 2018 | 2.5 | $7.80 |
| Apr 2018 | 2.5 | $7.41 |
| Oct 2013 | 2.5 | $5.20 |
| Jan 2023 | 2.0 | $6.60 |
| Dec 2020 | 2.0 | $6.60 |
| Sep 2017 | 2.0 | $4.94 |
| Mar 2012 | 2.0 | $4.90 |
| Nov 2010 | 2.0 | $4.40 |
| Jan 2010 | 2.0 | $4.80 |
| Jan 2012 | 1.0 | $2.80 |