| Sold | Grade | Monthly Average |
| Mar 2024 | 2.0 | $16.50 |
| Nov 2019 | 3.5 | $41.00 |
| Aug 2023 | 3.0 | $28.00 |
| Sep 2011 | 3.0 | $23.50 |
| Jun 2019 | 2.0 | $16.50 |
| Jan 2018 | 1.8 | $14.50 |
| Dec 2013 | 1.8 | $10.10 |
| Sep 2014 | 1.5 | $12.95 |
| Jan 2010 | 1.5 | $11.50 |
| Jan 2017 | 1.0 | $8.20 |
| Jun 2014 | 1.0 | $9.40 |
| Jul 2021 | 0.5 | $4.49 |