Price avaialble since 2011-05-19 | |||||
| Date | North America | US West Coast | US Midwest | US East Coast | Unit |
| 2020-11-03 | 17.52 | $US/Oz | |||
| 2020-11-02 | 17.26 | $US/Oz | |||
| 2020-10-30 | 16.81 | $US/Oz | |||
| 2020-10-29 | 17.48 | $US/Oz | |||
| 2020-10-28 | 17.85 | $US/Oz | |||
| 2020-10-27 | 17.74 | $US/Oz | |||
| 2020-10-26 | 18.09 | $US/Oz | |||
