| Sold | Grade | Monthly Average |
| Jul 2016 | 6.0 | $46.00 |
| Apr 2017 | 5.0 | $55.00 |
| Mar 2020 | 4.5 | $50.00 |
| Feb 2020 | 4.5 | $60.00 |
| Feb 2019 | 4.5 | $49.00 |
| Jun 2018 | 4.5 | $60.00 |
| Feb 2018 | 4.5 | $38.00 |
| Jan 2011 | 4.5 | $45.50 |
| Jun 2018 | 4.0 | $27.00 |
| May 2022 | 3.5 | $32.00 |
| Jul 2023 | 3.0 | $26.00 |
| Apr 2022 | 3.0 | $23.50 |
| Jan 2018 | 3.0 | $18.25 |
| Aug 2015 | 3.0 | $18.00 |
| Jun 2015 | 3.0 | $19.03 |
| Aug 2021 | 2.5 | $19.75 |
| Apr 2019 | 2.5 | $25.18 |
| May 2017 | 2.5 | $9.99 |
| Jan 2016 | 2.0 | $21.00 |
| Oct 2019 | 1.8 | $18.00 |
| May 2023 | 0.5 | $4.10 |