I've never done Shadow Lair Firestorm Citadel, but I'm wondering, does the profit from the citadel itself, plus the ability to sell the rewards you get from it, offset the cost of, let's assume you're splitting the cost four-ways, 450 CE?
I also may as well ask, what is the general crown output for SL FSC anyway?
17000 crowns, plus what you may sell the material for, which I don't think there is a demand for it, as UFSC gear isn't quite worth it. Only "costume lovers" may buy it.