Talk:Summer 2015 Event/@comment-175.140.47.125-20150817074636/@comment-1335411-20150817080756

Yep E-6 Medium is frugal - my expenses are also roughly the same - if you have veteran reppu's and veteran bombers.

I also used boss support expeds to increase the odds of an S-rank. I think mine was a total of 10-12 runs.