| Sold | Grade | Monthly Average |
| Oct 2014 | 5.5 | $21.00 |
| Aug 2025 | 4.0 | $33.00 |
| Feb 2013 | 4.0 | $10.10 |
| May 2015 | 3.0 | $11.16 |
| Apr 2014 | 2.5 | $10.80 |
| May 2022 | 2.0 | $6.84 |
| Jan 2014 | 2.0 | $8.80 |
| Apr 2011 | 2.0 | $8.40 |
| Jun 2017 | 1.8 | $7.20 |
| Oct 2020 | 1.5 | $6.30 |
| Aug 2020 | 1.5 | $6.30 |
| Dec 2012 | 1.5 | $4.40 |