I sold almost all of my items already all by WU and i got 0 problems.
the last what i have for sell:
-Mage lvl 75 1,5m nps with NCS and personal staff +7
-priest chitin: helmet boots and gaunts +5 rebirth (+8)
-full paper set +9hp "only helm+8" and DD+6 grade 2 (92int)