| Sold | Grade | Monthly Average |
| Jan 2015 | 5.5 | $5.00 |
| Jan 2021 | 4.5 | $8.80 |
| Aug 2023 | 4.0 | $7.10 |
| Jul 2023 | 4.0 | $8.00 |
| Jan 2022 | 4.0 | $8.00 |
| Feb 2015 | 4.0 | $6.80 |
| Mar 2021 | 3.5 | $7.10 |
| Sep 2014 | 3.5 | $3.30 |
| Jun 2011 | 3.0 | $7.00 |
| Jul 2010 | 2.5 | $3.00 |
| May 2023 | 2.0 | $4.00 |
| Nov 2020 | 2.0 | $3.60 |
| Sep 2015 | 2.0 | $4.04 |
| Sep 2010 | 2.0 | $2.49 |