| Sold | Grade | Monthly Average |
| May 2014 | 8.0 | $4.30 |
| May 2012 | 8.0 | $6.85 |
| May 2018 | 6.5 | $6.49 |
| Jul 2020 | 6.0 | $6.00 |
| Mar 2021 | 5.0 | $5.70 |
| Jan 2020 | 4.5 | $4.30 |
| Nov 2012 | 4.5 | $3.00 |
| Oct 2021 | 4.0 | $6.00 |
| Mar 2014 | 4.0 | $1.75 |
| Jun 2017 | 3.5 | $2.80 |
| Aug 2012 | 3.0 | $1.10 |
| Dec 2025 | 2.5 | $2.65 |
| Mar 2024 | 2.0 | $3.00 |
| Nov 2021 | 2.0 | $3.00 |
| Aug 2017 | 2.0 | $1.80 |
| Aug 2012 | 2.0 | $1.10 |
| Oct 2019 | 1.8 | $2.00 |