Engine builders...this machining cost sound excessive?

I would think it would be hard to make a go in Canada at $100 an hour unless you are a one man shop with a lot of the equipment paid off...cheap rent in the city here is well over $10 a square foot plus fees,taxes electricity heat...plus it is likely hard to bill out more than 6 hours a day with all the other stuff you have to do...plus I notice the local machine shops always have stuff sitting that has not been paid for...sometimes for months