| Sold | Grade | Monthly Average |
| May 2019 | PGX 9.9 | $41.00 |
| Apr 2019 | PGX 9.8 | $41.00 |
| Sep 2014 | 9.6 | $33.00 |
| Aug 2014 | 9.4 | $24.00 |
| Sep 2014 | 9.2 | $20.00 |
| Jun 2015 | 8.5 | $17.00 |
| Mar 2020 | 8.0 | $2.60 |
| Dec 2019 | 8.0 | $2.40 |
| Jan 2018 | 8.0 | $2.40 |
| Oct 2017 | 8.0 | $29.64 |
| Mar 2016 | 8.0 | $2.60 |