| Sold | Grade | Monthly Average |
| Jan 2017 | 9.2 | $27.00 |
| Nov 2014 | 9.0 | $21.50 |
| Jun 2011 | 5.5 | $8.10 |
| Oct 2016 | 4.5 | $11.00 |
| Apr 2025 | 4.0 | $6.00 |
| Dec 2021 | 4.0 | $6.00 |
| Sep 2015 | 4.0 | $6.00 |
| Jan 2021 | 3.0 | $4.60 |
| Aug 2024 | 2.5 | $12.35 |
| Jan 2025 | 2.0 | $3.00 |
| Dec 2021 | 2.0 | $3.00 |
| Dec 2013 | 2.0 | $3.00 |
| Nov 2022 | 1.0 | $2.00 |