| Sold | Grade | Monthly Average |
| Oct 2023 | 2.0 | $6.00 |
| Jun 2022 | 6.0 | $19.75 |
| Jul 2010 | 6.0 | $13.00 |
| Sep 2020 | 5.0 | $15.75 |
| Feb 2023 | 4.0 | $13.00 |
| Nov 2018 | 4.0 | $18.00 |
| Jun 2018 | 4.0 | $18.00 |
| Feb 2018 | 4.0 | $13.00 |
| Aug 2013 | 4.0 | $6.60 |
| Mar 2012 | 4.0 | $6.60 |
| Jan 2019 | 3.5 | $10.50 |
| Jun 2017 | 3.5 | $13.50 |
| Jan 2017 | 3.5 | $9.60 |
| Jul 2015 | 3.5 | $5.20 |
| Jul 2020 | 3.0 | $8.40 |
| Feb 2013 | 3.0 | $4.60 |
| Sep 2019 | 2.5 | $7.20 |
| Mar 2019 | 2.0 | $6.00 |
| Sep 2018 | 1.8 | $4.80 |
| Oct 2012 | 1.8 | $2.40 |