[SixOfSpades]

The only ways a Neutral pure-classed Wizard can get something worth wearing:

1) If you have the Bonus Merchants (which comes with ToB) installed, Deidre has the Robe of Vecna.
2) If you're in ToB and currently have access to either Saradush or Amkethran, you can buy a Robe of the Neutral Archmagi.
3) If you have Tactics, or at least the Ritual component, installed, you can loot a Robe of the Neutral Archmagi.
4) If you have Virtue installed, you can change your alignment to either Good or Evil, and thus wear a Robe of the Good/Evil Archmagi, which are much, much more obtainable.
5) If you have Item Upgrades installed and an Archmagi Robe, you can get it souped up into an Enchanced Robe of the Archmagi. Alignment rules still apply.