| Sold | Grade | Monthly Average |
| Aug 2025 | 2.5 | $26.00 |
| Jun 2021 | 4.5 | $35.50 |
| Nov 2011 | 4.5 | $16.50 |
| Sep 2022 | 4.0 | $32.00 |
| Dec 2020 | 3.5 | $19.00 |
| Mar 2013 | 3.5 | $39.05 |
| Mar 2015 | 3.0 | $29.50 |
| Oct 2010 | 3.0 | $31.00 |
| May 2024 | 2.5 | $30.00 |
| Aug 2018 | 2.0 | $20.00 |
| Nov 2015 | 2.0 | $14.10 |
| Mar 2022 | 1.8 | $9.60 |
| Mar 2011 | 1.0 | $13.50 |