| Sold | Grade | Monthly Average |
| Nov 2017 | 9.4 | $26.00 |
| Jan 2014 | 9.4 | $16.95 |
| Apr 2012 | 9.4 | $10.00 |
| May 2011 | 9.4 | $12.00 |
| Feb 2011 | 9.4 | $12.00 |
| Aug 2010 | 9.4 | $12.00 |
| Feb 2024 | 8.0 | $13.50 |
| Apr 2013 | 8.0 | $20.00 |
| Jan 2010 | 8.0 | $10.75 |
| Dec 2025 | 6.0 | $7.80 |
| Jul 2024 | 6.0 | $14.75 |
| Sep 2016 | 6.0 | $10.00 |
| Jun 2014 | 6.0 | $10.00 |
| Jun 2022 | 4.0 | $6.70 |