| Sold | Grade | Monthly Average |
| Nov 2017 | 9.4 | $4.00 |
| Jan 2012 | 9.4 | $1.50 |
| Apr 2018 | 8.0 | $3.20 |
| Dec 2012 | 8.0 | $1.00 |
| Jan 2020 | 6.0 | $2.40 |
| Aug 2016 | 6.0 | $3.60 |
| Jul 2016 | 6.0 | $3.60 |
| Mar 2016 | 6.0 | $3.00 |
| Jun 2015 | 6.0 | $3.00 |
| May 2014 | 6.0 | $3.00 |
| Oct 2012 | 6.0 | $0.80 |
| Jan 2012 | 6.0 | $0.80 |
| Aug 2011 | 6.0 | $0.80 |
| May 2023 | 4.0 | $2.50 |
| Apr 2023 | 4.0 | $2.50 |
| Feb 2023 | 4.0 | $2.50 |
| Aug 2022 | 4.0 | $2.00 |