Dude you are a warrior ele, so you can farm it easely, just kill some hydras. You'll have the staff in just a few minutes and you'll saved a lot of money.
I forgot, if you want to know where you can get it - check www.guildwiki.org - It's just outside Augury rock ( to the north of AuRo ).
k, no problem. I love to help people, I don't know how far you are in the game with your necro, but my necro (55hp necro) can farm the hydras easely alone.
If he's far enough in the game you should be able to farm it in no time.
