| Sold | Grade | Monthly Average |
| Nov 2014 | 5.0 | $9.25 |
| Apr 2020 | 4.5 | $42.00 |
| Feb 2016 | 4.5 | $43.50 |
| Oct 2010 | 4.0 | $38.50 |
| Sep 2022 | 3.5 | $14.50 |
| Oct 2014 | 3.5 | $18.50 |
| Jan 2025 | 3.0 | $19.50 |
| Nov 2015 | 3.0 | $31.75 |
| Nov 2014 | 2.5 | $25.50 |
| Feb 2020 | 2.0 | $15.00 |
| May 2019 | 1.8 | $18.76 |
| Nov 2020 | 0.5 | $3.80 |