| Sold | Grade | Monthly Average |
| Feb 2019 | 6.0 | $10.75 |
| Apr 2011 | 5.5 | $9.70 |
| Sep 2021 | 5.0 | $19.00 |
| Aug 2025 | 4.5 | $21.00 |
| Jan 2016 | 4.5 | $7.90 |
| Dec 2012 | 4.0 | $7.20 |
| May 2012 | 4.0 | $7.20 |
| Sep 2011 | 4.0 | $7.20 |
| Jul 2016 | 3.5 | $10.00 |
| Dec 2025 | 3.0 | $3.78 |
| Nov 2021 | 3.0 | $5.00 |
| Dec 2017 | 3.0 | $4.75 |
| Jan 2018 | 2.5 | $4.30 |