| Sold | Grade | Monthly Average |
| Jun 2026 | 2.0 | $25.00 |
| Jul 2024 | 4.5 | $70.00 |
| Jul 2021 | 4.0 | $45.00 |
| Apr 2021 | 4.0 | $34.00 |
| Jul 2012 | 4.0 | $44.00 |
| Nov 2022 | 3.5 | $8.40 |
| Nov 2015 | 3.0 | $29.40 |
| May 2019 | 2.5 | $30.50 |
| Feb 2017 | 2.5 | $39.00 |
| Sep 2022 | 2.0 | $16.50 |
| May 2013 | 1.5 | $24.75 |
| Nov 2021 | 1.0 | $9.20 |
| Jun 2011 | 1.0 | $15.75 |