| Sold | Grade | Monthly Average |
| Oct 2020 | 9.4 | $18.00 |
| Feb 2018 | 9.4 | $6.50 |
| Sep 2017 | 9.4 | $5.99 |
| Aug 2017 | 9.4 | $6.00 |
| Oct 2019 | 8.0 | $8.00 |
| Mar 2018 | 8.0 | $5.25 |
| Feb 2018 | 8.0 | $5.25 |
| Nov 2017 | 8.0 | $6.00 |
| Oct 2017 | 8.0 | $4.70 |
| Feb 2022 | 6.0 | $6.00 |
| Aug 2021 | 6.0 | $6.00 |
| Oct 2020 | 6.0 | $6.80 |
| Feb 2020 | 6.0 | $6.00 |
| May 2018 | 6.0 | $4.55 |
| Sep 2021 | 4.0 | $4.00 |
| Jul 2019 | 4.0 | $3.90 |
| Nov 2019 | 2.0 | $2.00 |