| Sold | Grade | Monthly Average |
| Nov 2025 | 3.0 | $30.00 |
| Sep 2025 | 2.0 | $19.00 |
| Jan 2010 | 6.0 | $26.50 |
| Jan 2025 | 4.5 | $55.00 |
| Aug 2023 | 4.0 | $57.00 |
| Mar 2013 | 4.0 | $19.25 |
| Apr 2023 | 3.0 | $51.00 |
| Sep 2015 | 3.0 | $16.20 |
| Nov 2013 | 3.0 | $13.25 |
| Aug 2010 | 3.0 | $13.25 |
| Sep 2022 | 2.5 | $43.00 |
| Jan 2017 | 2.5 | $12.11 |
| Oct 2014 | 2.5 | $15.25 |
| Feb 2010 | 2.5 | $11.50 |
| Jun 2021 | 2.0 | $41.00 |
| May 2018 | 2.0 | $10.75 |
| May 2017 | 1.8 | $10.75 |
| Feb 2014 | 1.8 | $9.60 |
| Jun 2013 | 1.5 | $9.25 |
| Feb 2020 | 1.0 | $7.70 |