| Sold | Grade | Monthly Average |
| Oct 2021 | 5.5 | $64.00 |
| Nov 2020 | 4.5 | $83.00 |
| Aug 2016 | 4.5 | $31.00 |
| Jan 2016 | 4.5 | $53.00 |
| Mar 2018 | 4.0 | $49.40 |
| May 2015 | 4.0 | $25.05 |
| Apr 2014 | 4.0 | $21.27 |
| May 2017 | 3.5 | $50.00 |
| Mar 2017 | 3.5 | $25.02 |
| Sep 2018 | 3.0 | $47.50 |
| Feb 2018 | 3.0 | $34.68 |
| Aug 2016 | 3.0 | $36.50 |
| Dec 2018 | 2.5 | $22.00 |
| Jul 2015 | 2.0 | $8.50 |
| Nov 2013 | 2.0 | $23.10 |
| Sep 2015 | 1.8 | $13.76 |
| Feb 2019 | 0.5 | $7.80 |