Costs 150 dark side currency for tier 6 SEE battle and 144 is the max

Thank you for providing a completely useless answer…. By telling someone to read a section but not divulging where it is. 

battle detail section can be found on the screen where you select to battle for the coin. If you scroll down there is a message that says it’s “temporarily disabled and will return soon”. Unclear as to why the person from ea that directed you to go see the battle section instead of just saying it’s temporarily down.