[QUOTE=robertobaggio20;5804398]It sounds like he's just buying you a replacement head instead of doing any repair....nonsense.
Cracks in heads can only be repaired by certified experts in such things. Its not a simple matter of heating the area with a blowtorch, pouring some metallic filler in and waiting for it to cool nicely. In fact, its very difficult to do, and its much cheaper to just buy a head. Hell, you can get an engine for something like $400-$500.
I'm sure this mechanic is not going to recast the entire head and give you new valves and stuff. Buy a new head yourself, use the money saved to :
He is certified but as you pointed out, is a bit on the expensive side. I'll check around some more but hopefully the head isn't cracked. Will also consider your other suggestions on this reply Roberto.