| Sold | Grade | Monthly Average |
| Feb 2015 | 6.0 | $46.00 |
| Jun 2016 | 4.5 | $50.00 |
| Mar 2012 | 3.5 | $42.75 |
| Aug 2023 | 3.0 | $35.00 |
| Jan 2022 | 2.5 | $22.00 |
| Mar 2021 | 2.5 | $27.00 |
| Nov 2017 | 2.5 | $22.80 |
| Feb 2021 | 2.0 | $32.00 |
| Nov 2012 | 2.0 | $29.85 |
| May 2011 | 2.0 | $25.00 |
| Jun 2017 | 1.8 | $20.00 |
| Aug 2022 | 1.5 | $14.50 |
| Apr 2022 | 1.5 | $11.50 |
| May 2015 | 1.5 | $9.80 |
| Aug 2010 | 1.5 | $21.50 |
| Aug 2024 | 1.0 | $10.00 |
| Dec 2023 | 1.0 | $7.60 |
| Nov 2023 | 1.0 | $9.00 |
| Dec 2013 | 1.0 | $16.75 |
| Jan 2016 | 0.5 | $7.10 |