The exact value of Extend depends upon the cleric's spell selection and the nature of the campaign. Doubling the length of time certain buff/transmutation/abjuration spells can be quite useful, especially since you're not burning a feat and a level adjustment to do so.
A metamagic Empower rod could be better, but its 3x the cost- somewhat prohibitive at this point, though it really only gets better as the PC advances in level. Also, many of the Cleric's spells no longer have variable components.
Now my spear does 1d8+1 +1 (acid) +6 (str or with Bull Str +9) + 1d6
+1 breastplate (1350???? am I missing the 300 in that cost for Mwk?)
composite bow +4 (900)(only a +6 bonus on attack roll and probably not hitting anything much)
Well, a +2 Wis for a cleric isn't anything to sneeze at, and its priced the same as Gauntlets of Ogre Power.
That Wis boost improves your Will Saves, spell DCs, certain variables, and even gets you a bonus spell. Depending upon your PC's exact build, other benefits may accrue. For example, a single level in the Shiba Protector PrCl (Oriental Adventures) would let you add your Wis bonus to Att & Dam rolls- a Cleric multiclassing into that PrCl with a Periapt of Wisdom would thus gain the functional equivalent of having Gauntlets of Ogre Power as well as the spellcasting boost.*
* Actually moreso, since you add your total Wis bonus to your Att & Dam rolls in addition to your Str or Dex combat mods.
Don't get a variable rate mortgage ; )
I would like to know more about this class but i cant find anything online.