Price avaialble since 2011-05-19 | |||||
| Date | North America | US West Coast | US Midwest | US East Coast | Unit |
| 2020-11-03 | 19.73 | $US/Oz | |||
| 2020-11-02 | 19.45 | $US/Oz | |||
| 2020-10-30 | 18.94 | $US/Oz | |||
| 2020-10-29 | 19.69 | $US/Oz | |||
| 2020-10-28 | 20.11 | $US/Oz | |||
| 2020-10-27 | 20.00 | $US/Oz | |||
| 2020-10-26 | 20.38 | $US/Oz | |||
