Not sure on price conparison as i would never do drywall in a shop. But I think its quite abit less, especially not having to mud tape sand and paint
So your home is ICF and the garage is wood?
Did you consider doing the garage with ICF?
Why would you never consider drywall a shop? Myself I'm at a point where the garage needs to be finished on the inside, tape mudded and painted.
BUT I really like the metal on the ceiling and walls inside, gives it a nice look, shouldn't be hard to cleanup too, and if you need to fix, repair something not an issue. Think I will copy that on my garage, hope the cost isn't stupid.
What's your goal with the plywood on the lower part? VS metal all the way down. I need to see if my city will allow that AKA fire issues.
looks awesome