Is Holy Surge Strictly Better (and less expensive) than Holy?

Question

The DMG (p225) has the Holy enchantment listed as costing a +2 enchantment.

The MIC (p36) has the Holy Surge enchantment as costing just a +1 enchantment, and says:

A holy surge weapon functions as a holy weapon (DMG 225). In addition... (it does other cool stuff)

Am I correct in reading that Holy Surge costs less than Holy and does more? If not, what am I missing?

Answer 1

I found my answer on Page 27 of the MIC. It specifies that enchantments with the synergy keyword have another enchantment as a pre-requisite.

So it looks like you have to first have Holy on the weapon before putting Holy Surge on it, making the total cost for both enchantments +3.