| Sold | Grade | Monthly Average |
| Dec 2023 | 4.0 | $40.00 |
| Jun 2013 | 4.0 | $51.00 |
| Dec 2022 | 3.0 | $35.00 |
| Dec 2018 | 3.0 | $25.00 |
| May 2017 | 3.0 | $30.50 |
| Jan 2014 | 3.0 | $30.50 |
| May 2021 | 2.5 | $15.00 |
| Nov 2018 | 2.5 | $26.00 |
| Mar 2019 | 2.0 | $22.00 |
| Mar 2018 | 2.0 | $22.00 |
| Jun 2011 | 2.0 | $20.50 |
| Mar 2021 | 1.8 | $10.00 |
| Dec 2019 | 1.8 | $11.50 |
| Jan 2015 | 1.5 | $14.85 |
| Jul 2023 | 1.0 | $7.60 |
| May 2022 | 0.5 | $8.00 |