that staff is a good one but there is also one from the black emporium that has slightly higher dps and better stats overall. the emporium one is
The Final Thought: 48 physical damage (65 per second) +4 magic +104 magic/stamina +33% nature damage +33% spirit damage 5% chance to regenerate 9% mana/stamina Plus 1 rune slot
don't have the stats for cold blooded staff (the wounded coast vendor one) is slightly less dps doing cold damage 40 mana something like 10 regen and 6 magic and a boost to blood magic can't remember exactly what that boost is.
37 cold damage (50 DPS) +6 magic +40 mana/stamina +10 mana/stamina regen +30% cold damage Blood Magic: Each point of health provides 1 additional mana.
I really don't consider that to be worth the ridiculous price, which is 113 gold. Remember that raw staff DPS is taken into account for your spell damage, so regardless of a staff's bonuses you still want whatever hits the hardest. Mana and mana regen especially are rather redundant, because of potions and rally.