| Sold | Grade | Monthly Average |
| Nov 2010 | 7.0 | $12.50 |
| Apr 2016 | 6.0 | $9.00 |
| Sep 2025 | 5.0 | $10.00 |
| Mar 2024 | 4.5 | $6.60 |
| May 2021 | 4.5 | $6.27 |
| Dec 2022 | 4.0 | $17.00 |
| Feb 2022 | 3.5 | $6.00 |
| Jul 2017 | 3.5 | $5.20 |
| Feb 2024 | 2.0 | $3.30 |
| Feb 2022 | 2.0 | $3.30 |
| Feb 2014 | 2.0 | $3.45 |
| Aug 2017 | 1.8 | $3.10 |
| Dec 2010 | 1.8 | $3.10 |
| Aug 2013 | 1.0 | $1.89 |
| Sep 2022 | 0.5 | $2.00 |