Thread:SkySearcher27/@comment-1914684-20141124125633

I am going to give up farming E-4 for now - just way too expensive and RNG decided today morning that I cannot see the boss 3 times on a roll :-P. Farming E-1 (Taigei/Akashi) is so much cheaper than dreaming for 401 sub. x_X But I think you should still give at least one try to E-4, while keeping expectations low. 