Delirium Softcore crit jewel price check

I've found an item that, according to the trade section should be worth at least 5 exalted orb. I have never tried a melee build so I find it hard to put a price on this jewel. Please help me out by helping me understand why this is so valuable or by price checking it. Thanks in advance. Feel free to contact me in game at Incinerating_Owl