| Sold | Grade | Monthly Average |
| Apr 2011 | 6.0 | $9.00 |
| Mar 2010 | 5.5 | $8.90 |
| Jan 2022 | 4.0 | $36.00 |
| Feb 2021 | 4.0 | $6.60 |
| May 2018 | 3.5 | $5.70 |
| Feb 2017 | 3.5 | $5.70 |
| Mar 2021 | 3.0 | $4.75 |
| Sep 2018 | 2.5 | $4.30 |
| Mar 2018 | 2.5 | $4.09 |
| Feb 2022 | 2.0 | $3.60 |
| May 2020 | 2.0 | $3.60 |
| Dec 2011 | 2.0 | $3.60 |