| Sold | Grade | Monthly Average |
| Sep 2012 | 5.5 | $34.80 |
| Apr 2014 | 3.5 | $13.55 |
| Mar 2019 | 2.5 | $20.00 |
| Sep 2014 | 2.5 | $19.00 |
| Dec 2015 | 2.0 | $18.00 |
| Jul 2011 | 2.0 | $16.00 |
| Aug 2017 | 1.8 | $8.50 |
| May 2017 | 1.8 | $14.96 |
| Oct 2021 | 1.5 | $16.00 |
| Jun 2019 | 1.0 | $19.00 |
| Apr 2019 | 1.0 | $11.50 |
| Jan 2013 | 1.0 | $9.70 |