Being popular or not, if you are not going to use it, try to use the money elsewhere... if you do have a use, keep it.
I picked up mine on here used, in that price range, to run behind my PRO. Got a see through lens cap, as well as a Scopecoat. Protected as much as my PRO. Just gives me more capability. If I want to run no magnification at a certain point, flip to the side. If I really don't need it, comes off quick enough (and no problem with zero).