| Sold | Grade | Monthly Average |
| Jan 2024 | 2.5 | $2.80 |
| Jan 2024 | 1.8 | $2.50 |
| Jun 2015 | 5.5 | $4.30 |
| Oct 2012 | 5.5 | $4.00 |
| May 2021 | 5.0 | $5.70 |
| Dec 2018 | 4.5 | $3.30 |
| Sep 2011 | 4.5 | $3.30 |
| Jan 2019 | 4.0 | $3.00 |
| Nov 2014 | 4.0 | $2.40 |
| Mar 2014 | 4.0 | $3.00 |
| Jan 2010 | 4.0 | $3.60 |
| Oct 2009 | 4.0 | $3.20 |
| May 2009 | 4.0 | $2.25 |
| Sep 2020 | 3.5 | $3.80 |
| Apr 2017 | 3.0 | $1.70 |
| Nov 2019 | 2.0 | $2.70 |
| Mar 2016 | 2.0 | $1.35 |
| Nov 2014 | 2.0 | $1.20 |
| Jan 2014 | 2.0 | $1.10 |