| Sold | Grade | Monthly Average |
| Mar 2024 | 1.0 | $2.50 |
| Jun 2017 | 6.5 | $8.60 |
| Aug 2020 | 4.5 | $6.60 |
| Jan 2019 | 4.0 | $6.00 |
| Oct 2018 | 4.0 | $6.00 |
| May 2018 | 4.0 | $6.00 |
| Jun 2011 | 4.0 | $3.60 |
| Jul 2017 | 3.5 | $2.40 |
| Dec 2017 | 3.0 | $4.20 |
| Sep 2014 | 3.0 | $2.25 |
| Jan 2017 | 2.5 | $1.80 |
| Sep 2023 | 2.0 | $3.00 |
| Feb 2023 | 2.0 | $3.00 |
| Jun 2019 | 2.0 | $3.00 |
| Sep 2023 | 1.5 | $2.50 |
| Nov 2012 | 1.5 | $1.35 |