Yes it's definitely worth selling the inherent mod 15%/-1 health is very sought after I can't really tell you an exact price as I don't pay attention to dual vamp weapons.
this is worth selling, Dual vamp one handed weapon are always welcome ^^
i can't put an exact price on it but i think if you put in on the auction page you can get around 50ecto
i once saw a Chaos axe with the same mods go for almost 70ecto
