Prices depend on where you live. Places in my area are $90/hr for any work. I paid $95 at a friends shop after wasting 3hrs of my time attempting to get the bolts loose. I broke 3 of the manifold bolts but the 4th one I just couldn't get.
Car with 20K miles ended up having a seized nut which stripped the entire bolt. Had to put another manifold bolt in. I consider myslef lucky that all I was charged was $95.
