| Sold | Grade | Monthly Average |
| Jan 2014 | 6.0 | $46.50 |
| Mar 2025 | 5.0 | $58.00 |
| May 2022 | 4.0 | $24.00 |
| Feb 2013 | 4.0 | $20.43 |
| Dec 2014 | 3.5 | $30.25 |
| Mar 2019 | 3.0 | $23.00 |
| Aug 2018 | 3.0 | $23.00 |
| Apr 2019 | 2.5 | $22.00 |
| May 2010 | 2.0 | $19.00 |
| Dec 2014 | 1.8 | $18.45 |
| Jan 2020 | 1.5 | $8.49 |
| Mar 2011 | 1.5 | $16.75 |
| Jan 2011 | 1.0 | $10.00 |
| Dec 2021 | 0.5 | $3.00 |
| Aug 2021 | 0.5 | $3.00 |