| Sold | Grade | Monthly Average |
| May 2017 | 9.2 | $200.00 |
| Jan 2012 | 9.2 | $177.84 |
| Apr 2011 | 7.0 | $46.55 |
| Mar 2011 | 7.0 | $49.00 |
| Jan 2011 | 7.0 | $54.00 |
| Oct 2020 | 5.5 | $95.00 |
| May 2012 | 5.0 | $75.00 |
| Jun 2012 | 4.5 | $50.00 |
| Aug 2010 | 4.5 | $45.00 |
| Oct 2011 | 4.0 | $60.80 |
| Jul 2019 | 3.5 | $40.00 |
| Apr 2020 | 3.0 | $112.00 |
| Mar 2011 | 2.0 | $16.00 |