Manastone vs Mana Robe for a wizard

[Daldaen]

1. Yes
2. Yes
3. 150kish for Manastone (I think) Mana Robe however much the seller is asking basicaly
4. No. Unless you have epic to stop the damage or pre-nerf fungi to offset the damage via regen or a friend with regen/heals who is always with you.... I'd say it isn't that useful to your class.

Then again I've never played a wiz.

And if you don't have an enormous bank you won't be anywhere close to being able to afford Mana Robe.