| Sold | Grade | Monthly Average |
| Oct 2023 | 2.5 | $3.60 |
| Jun 2021 | 5.0 | $5.00 |
| May 2021 | 5.0 | $5.00 |
| May 2023 | 4.0 | $6.00 |
| Apr 2023 | 4.0 | $6.00 |
| Mar 2023 | 4.0 | $6.00 |
| May 2022 | 4.0 | $6.00 |
| Mar 2021 | 4.0 | $4.20 |
| Apr 2020 | 4.0 | $4.20 |
| Jun 2012 | 4.0 | $6.15 |
| Jul 2011 | 3.5 | $4.80 |
| Jun 2013 | 2.5 | $3.60 |
| Jun 2022 | 2.0 | $3.00 |
| Feb 2010 | 1.5 | $2.10 |
| Jul 2016 | 1.0 | $1.49 |