You don't need decade to cut production cost. There are many companies producing at low cost. As per my knowledge GXY is the most expensive lithium producing company in world. It could be due to hard rocking exploration. (
http://www.visualcapitalist.com/a-cost-comparison-lithium-brine-vs-hard-rock-exploration/). Check production cost of some of LI producer.
Orochobre, SQM (brine) - $200/t LCE
Albermarle(brine) - $220/t LCE
Tibet Zabuye, FMC Lithium(brine) - $305/t LCE
Citic guoan, Qinghai Lanke(brine) - $315/t LCE
China other(mineral) - $380/t LCE
Tianqi Lithium, Ganfeng Lithium(mineral) - $450/t LCE
Galaxy Resources(mineral) - $514/t LCE
![](http://oi68.tinypic.com/e9htzl.jpg)