| Sold | Grade | Monthly Average |
| Jan 2012 | 7.5 | $156.75 |
| May 2017 | 7.0 | $150.00 |
| Oct 2013 | 6.5 | $33.00 |
| May 2012 | 6.5 | $64.00 |
| Sep 2012 | 6.0 | $43.00 |
| Mar 2018 | 5.5 | $153.01 |
| Apr 2013 | 5.0 | $76.00 |
| Apr 2020 | 4.5 | $123.00 |
| Oct 2011 | 4.0 | $51.90 |
| Jun 2023 | 3.0 | $90.00 |
| Apr 2019 | 3.0 | $105.00 |
| May 2013 | 3.0 | $33.76 |