Is there a difference between the 2 product?The cable connecting to the driver broke and ultimateears is going to replace a new 1 for me but they dun have triplefi 10 with them and they would replace my defective phones with the triplefi 10vi.Other than the microphone, is there any difference...

I saw people selling s4 for 40-50++ usd per set on ebay.Are those real or could they be  fake?Currently I am interested in getting s4 as my m50 are too big to carry around.Hope you guys could enlighten me.Thanks.