| Sold | Grade | Monthly Average |
| Sep 2011 | 9.4 | $18.00 |
| Sep 2019 | 9.2 | $42.00 |
| Jun 2013 | 8.5 | $31.50 |
| Mar 2012 | 8.5 | $31.50 |
| Sep 2013 | 7.5 | $21.00 |
| Dec 2022 | 7.0 | $55.00 |
| Jul 2010 | 4.5 | $16.00 |
| Dec 2024 | 4.0 | $13.25 |
| Sep 2022 | 4.0 | $12.00 |
| Nov 2013 | 4.0 | $8.00 |
| Jul 2012 | 4.0 | $8.00 |
| Sep 2011 | 3.5 | $7.00 |
| Aug 2015 | 3.0 | $7.25 |
| Aug 2015 | 2.5 | $6.15 |
| Sep 2024 | 2.0 | $6.60 |
| May 2022 | 2.0 | $6.60 |
| May 2011 | 2.0 | $4.40 |
| Aug 2024 | 1.8 | $5.30 |
| Mar 2020 | 1.8 | $5.30 |
| Jan 2020 | 1.8 | $5.30 |
| Dec 2012 | 1.5 | $4.15 |