Wrath fresh?
You aren’t making much of a case besides cost of mats which seem like they would even out. Simple supply and demand stuff
Maybe one difference is dungeon blues vs T1. Or that there should be time to get to 60 and raid before honor patch. Or that you can’t buy gear from a Naxx clear with real money. I just don’t see your argument as being very good against some kind of SoM or something