PC on Raven Staff of Defense

Hi all.

Im not playing monk or caster so often so i dont know the prices.:S
Today i got this:

Raven Staff Of Defense
Energy + 10
Fire Dmg: 11-22 (Req 8 Divine Favor)
Halves Skills casting time Chance (10%)
Halves Skills Recharge time Chance(10%)
Armor + 5


The question is:
How much is it worth?

I'd say around 20k but wait for better opinions.

It's a monk staff, so I'd still expect 50k for this.

Would it have any change if i put INsightfull + 5 energy and Fortitude + 30 on?

Don't mod it if you plan to sell it...