http://reviews.harmony-central.com/r...115+Combo/50/1
Above link has some prices people claim to have paid.
I think you'd be lucky to get anywhere near $300, thought one of those reviews claims $325 used. $200 more realistic, if that, but I'm a pessimist. Not that desirable really, so it depends on if you can find a non-savy buyer (aka sucker).