| Sold | Grade | Monthly Average |
| Feb 2019 | 6.0 | $10.75 |
| Dec 2025 | 4.5 | $18.00 |
| Apr 2011 | 4.5 | $7.90 |
| Aug 2018 | 4.0 | $7.20 |
| Nov 2015 | 3.5 | $5.70 |
| Dec 2025 | 3.0 | $11.70 |
| Sep 2021 | 2.5 | $9.50 |
| Apr 2018 | 2.5 | $4.09 |
| Aug 2017 | 2.5 | $4.09 |
| Apr 2015 | 2.0 | $3.80 |
| Jun 2014 | 2.0 | $3.80 |
| May 2012 | 2.0 | $3.60 |