| Sold | Grade | Monthly Average |
| May 2026 | 4.0 | $15.25 |
| May 2026 | 3.0 | $14.75 |
| Jun 2026 | 1.0 | $8.40 |
| Sep 2010 | 6.0 | $12.00 |
| Dec 2024 | 4.0 | $26.00 |
| Mar 2024 | 4.0 | $20.00 |
| Oct 2010 | 3.5 | $7.00 |
| Mar 2025 | 3.0 | $15.44 |
| Mar 2011 | 3.0 | $6.10 |
| Jan 2010 | 3.0 | $12.83 |
| Sep 2013 | 2.5 | $5.20 |
| Feb 2026 | 2.0 | $11.75 |
| Oct 2013 | 2.0 | $4.40 |
| Aug 2011 | 2.0 | $4.40 |
| Feb 2011 | 2.0 | $4.40 |