Some strange problem.
Create 2 days ago Warrior, got 80lvl, and.... and can't sell items looted from Champs, Leges or other activities.
Today got from on of them Suti's Hexbreaker. Can't sell.
Put into the bank.
Relog from old char and... can sell.
Relog from new new char - can't sell again.
I think this is BUG.