Ear piece... ?? Should i get it.

Too much money for ear buds.  But to be fair to Oculus, they're remaining competitive to Bose and Beats by Dre.  This same style by one of them would easily set you back $100.  Now if your original headphones that came with the rift broke..... Still expensive, but doable.

Then you run into the problem Kevink808 mentions.... Sharing the rift with your friends and everyone has to use those nasty dirty ear buds that go inside your ear.  Gross.