| Sold | Grade | Monthly Average |
| Apr 2021 | 5.5 | $16.00 |
| Aug 2022 | 4.0 | $11.00 |
| Mar 2017 | 4.0 | $18.50 |
| Dec 2012 | 3.5 | $12.25 |
| May 2010 | 3.5 | $11.50 |
| Apr 2022 | 3.0 | $15.00 |
| Aug 2016 | 2.5 | $7.80 |
| Nov 2021 | 2.0 | $6.49 |
| May 2021 | 2.0 | $6.49 |
| Mar 2015 | 2.0 | $7.80 |
| Aug 2012 | 2.0 | $7.41 |
| May 2013 | 1.8 | $7.60 |