Harv,
You have hit on one of my BIGGEST pet peeves. Like you, I started looking at building my garage using new/green/better options. Unfortunately I could NOT find local contractors to do the work, nor could I find any manufacturer that would send out a crew.
I find it VERY frustrating that we have access to BETTER building technology, that by rights SHOULD be cheaper, but nobody uses it, contractors don't want to learn it, or it is so far overpriced that the average human can't afford it.
I also looked at ICF construction as well, but had the same issues. I hope your experience is better than mine was!!!