| Sold | Grade | Monthly Average |
| Jun 2025 | 6.0 | $8.00 |
| Mar 2025 | 2.5 | $3.20 |
| Nov 2024 | 8.0 | $29.00 |
| May 2016 | 8.0 | $27.00 |
| Dec 2009 | 8.0 | $17.50 |
| Sep 2011 | 6.5 | $11.40 |
| Apr 2019 | 6.0 | $10.00 |
| Aug 2010 | 6.0 | $12.00 |
| Jun 2019 | 4.0 | $7.20 |
| Aug 2020 | 3.5 | $6.40 |
| Jul 2017 | 3.5 | $5.76 |
| Apr 2019 | 2.0 | $4.00 |
| May 2017 | 2.0 | $3.60 |
| Sep 2011 | 2.0 | $3.80 |