| Sold | Grade | Monthly Average |
| Oct 2025 | 3.5 | $23.00 |
| Sep 2010 | 4.5 | $15.50 |
| Dec 2010 | 4.0 | $18.50 |
| Jul 2010 | 4.0 | $13.00 |
| Sep 2013 | 3.5 | $9.12 |
| Dec 2009 | 3.5 | $11.50 |
| Feb 2017 | 2.5 | $25.00 |
| Jan 2016 | 2.5 | $14.73 |
| Aug 2014 | 2.5 | $18.00 |
| Jul 2014 | 2.5 | $10.80 |
| Jul 2011 | 2.5 | $12.00 |
| Nov 2009 | 2.0 | $7.20 |
| Feb 2017 | 1.8 | $10.25 |
| May 2016 | 1.8 | $9.74 |
| Jan 2016 | 1.8 | $9.74 |
| Mar 2021 | 1.0 | $8.00 |
| Dec 2009 | 1.0 | $3.90 |
| Jun 2012 | 0.5 | $1.35 |