It doesn't happen often to me that I get somewhat expensive Runes (by PoxBox prices), but now I got Ferren Assassin. I am quite new to FW, but have most of the Rares + Lich King, Tormented Priest, Serkan and Xulos. So, if I would trade the Ferren in PoxBox, then what would you, experienced players say I should get (I am into collecting all the Runes, but it would be nice to get good Runes first), or should I wait till I get more Points and trade it for something else? I am at the moment playing with Skeletons.
My advice would be posting the decks you're currently aiming to play the most, as that would help greatly in narrowing down the pool of good runes you might want to go after.