| Sold | Grade | Monthly Average |
| Feb 2015 | PGX 9.4 | $17.00 |
| Aug 2012 | 9.4 | $9.00 |
| Jan 2011 | 9.4 | $4.30 |
| Aug 2011 | 9.2 | $4.70 |
| Sep 2022 | 8.5 | $16.00 |
| Sep 2021 | 8.5 | $22.00 |
| Aug 2021 | 8.5 | $18.00 |
| May 2024 | 8.0 | $16.00 |
| Jul 2020 | 8.0 | $11.40 |
| Jul 2015 | 8.0 | $12.00 |
| Feb 2022 | 7.5 | $14.50 |
| Sep 2019 | 7.5 | $10.69 |
| Jun 2018 | 7.5 | $11.25 |
| May 2025 | 6.0 | $9.00 |
| Mar 2019 | 6.0 | $9.00 |
| Oct 2019 | 5.0 | $7.49 |
| Oct 2015 | 4.0 | $6.00 |