$400 for a water pump is normal maybe 50 bucks more than mine. It takes a long time for anyone to do it without dropping the engine as there is little room to work on the pump. The head should not have come for a watewr pump though, unless the gasket was blown or leaking.
I've not yet had to replace a rack in a car, especially not a newer one. My only power steering pump to be replaced was on my 5.0L and it happened at 250,000 Km.
Most people here like Dixie Ford, but I think it's a long way from Pickering? Mine (non-SVT) goes in to see the Lincoln dealership. Blu is the only man I'd trust to work on it, so I always ask for him to perform the work. (have to trust a man with a show-winning MN12 T-Bird!)