| Sold | Grade | Monthly Average |
| Jun 2022 | 5.0 | $68.00 |
| Feb 2023 | 4.5 | $42.00 |
| May 2020 | 4.0 | $46.00 |
| Jun 2010 | 3.5 | $29.45 |
| Dec 2011 | 3.0 | $27.00 |
| Feb 2018 | 2.0 | $25.50 |
| Oct 2013 | 2.0 | $17.10 |
| Jul 2016 | 1.8 | $33.00 |
| Apr 2018 | 1.5 | $22.50 |
| Feb 2012 | 1.0 | $12.00 |
| Jul 2010 | 1.0 | $12.00 |
| Dec 2021 | 0.5 | $6.30 |