The OP did say unused so they can be resold, but as for where to sell them, it should be to someone he knows because everyone else is telling the buyers to only buy tickets if you really know the person.
So since there is a lot of ticket scams out there on places like Craig's list*, you may have trouble selling them since the buyers can't be sure they are legit.
* Yes I know some people have bought tickets with no issue on Craig's list, consider yourself lucky.