I was sitting on 10 armour pieces before the event went live (which made 3x3 bits of sets, 1 spare piece) having bought them all in Luna. Since then the prices have gone through the roof as people understand what they are for, and I can't simply afford them without grinding hours each day for the gold. Instead, I've taken all my characters that need training still into the dungeons, and fought the hardest things I dare risk... I have had 3 drops, 2 Jaanas Staff and one Virtue piece, in about 20 hours of work over the last few weeks.
I have also received gifts from people who've saved them for years, enough to complete one set. I handed it for the Book of Truth but absolute did not join the Bane. I will not do it on any other character either, as I want the Virtues to prevail... I'm assuming however that the first part is expressing Humility. However as due to poor scripting I'm not sure that it is, I've no real motivation to risk it by completing even more books at such a monstrous grind to get the armour pieces... not if it's just helping the Bane.
I'll continue to train in Dungeons just in case we can later help Humility further, but for now my interest in the event has gone again. I voted on the Armour pieces as that's the real frustration for me, but even were they dropping like candy I'd still be cautious.