Quote Originally Posted by Randomguy View Post
If you're a squishy wizard at mid levels, and you need to spend quite a bit of cash just to be able to make your enemies miss 30% of the time, (and you're rarely in melee combat anyway and have ways to escape if you get into melee combat), then you might as well spend your money elsewhere and drop the 30% to 15% or 10%
Mostly just spell slots, really. Combinations of polymorph, alter self, greater mage armor, shield, and luminous armor get you the AC of most non-caster characters that sink 1/2 their wealth into it.