| Sold | Grade | Monthly Average |
| Feb 2022 | 7.5 | $46.00 |
| Nov 2021 | 6.5 | $38.00 |
| Jun 2011 | 6.0 | $15.00 |
| Jul 2019 | 5.5 | $41.00 |
| Jun 2022 | 4.0 | $18.50 |
| Dec 2021 | 4.0 | $31.00 |
| May 2013 | 4.0 | $10.00 |
| Jul 2019 | 3.5 | $21.50 |
| Oct 2011 | 3.5 | $8.00 |
| Oct 2021 | 3.0 | $21.00 |
| Dec 2020 | 2.5 | $18.50 |
| Feb 2017 | 2.5 | $7.20 |
| May 2017 | 2.0 | $6.00 |
| Nov 2009 | 2.0 | $1.98 |