| Sold | Grade | Monthly Average |
| Nov 2023 | 4.0 | $7.10 |
| Feb 2018 | 4.0 | $4.80 |
| Sep 2017 | 4.0 | $3.84 |
| Jul 2017 | 3.5 | $3.90 |
| Oct 2012 | 3.5 | $5.50 |
| Aug 2012 | 3.5 | $4.15 |
| Jan 2011 | 3.5 | $2.40 |
| Aug 2018 | 3.0 | $3.30 |
| Oct 2020 | 2.0 | $3.00 |
| Aug 2019 | 2.0 | $3.00 |
| Oct 2014 | 2.0 | $1.40 |
| Jan 2019 | 1.5 | $2.10 |
| Feb 2020 | 1.0 | $2.00 |