How much is my world of warcraft account worth?

I have a level 85 frost Death Knight in full vicious with 364 item level, level 85 paladin with 333 item level, level 85 warlock with 336 item level, level 73 warrior, level 70 rogue (twink), level 66 mage, level 61 priest, level 45 hunter, level 31 shaman, and a level 23 druid. My Death Knight's profession is mining and herbalism, both capped. My warlock has tailoring around 350.