ICF (Insulated Concrete Form) Structure for Workshop? 60x100?

[climb.on]

I think the bigger issue is lack of experience with icfs and a general fear causing a contractor to over price the work.

Probably the biggest factor right there. As with almost anything once you veer from "i've always done it that way" the prices skyrocket. Guys are comfortable doing what they do. Ask them to do it different, especially when there is plenty of jobs to be had, you're asking for high prices. No debate from me that ICF's are better. But they cost a lot more around here, regardless if they should be or not. I'm DIY on most of my build, I just couldn't take on that part too (as much as I wanted to), which maybe could have brought the cost way down.