| Sold | Grade | Monthly Average |
| Apr 2024 | 3.5 | $26.00 |
| Dec 2023 | 3.5 | $15.00 |
| Jun 2010 | 6.5 | $18.00 |
| Jun 2018 | 4.5 | $16.00 |
| Dec 2013 | 3.0 | $7.32 |
| Mar 2020 | 2.5 | $7.00 |
| Mar 2017 | 2.5 | $7.20 |
| Dec 2015 | 2.5 | $7.20 |
| Jun 2022 | 2.0 | $9.49 |
| Jan 2020 | 2.0 | $14.00 |
| Dec 2018 | 2.0 | $7.30 |
| Mar 2013 | 2.0 | $6.05 |
| Jul 2012 | 2.0 | $6.25 |
| Apr 2015 | 1.8 | $8.00 |
| May 2016 | 1.5 | $5.20 |
| Mar 2014 | 1.5 | $4.90 |
| Oct 2010 | 1.0 | $3.49 |
| Jun 2013 | 0.5 | $1.62 |