| Sold | Grade | Monthly Average |
| Feb 2024 | 6.0 | $6.00 |
| Aug 2018 | 6.0 | $6.50 |
| Mar 2016 | 5.5 | $5.40 |
| Jan 2019 | 4.0 | $4.00 |
| Nov 2017 | 4.0 | $3.42 |
| Oct 2015 | 4.0 | $4.30 |
| May 2011 | 4.0 | $4.00 |
| Nov 2013 | 3.5 | $3.32 |
| Mar 2011 | 3.0 | $3.00 |
| Jul 2010 | 3.0 | $2.80 |
| Jan 2020 | 2.5 | $2.60 |
| Oct 2013 | 2.5 | $2.60 |
| Dec 2018 | 2.0 | $2.20 |