I've been pricing this out. I was quoted at 4.3 hours for the left one, and 1.3 for the right, so that's 5.6 hours, at least for the early style ones. I don't know if the later type would be better or not.
Anyway, factory service manual has them putting the car on a lift and dropping the whole subframe/engine to get at these things.
Sounds high, to me, depending on their hourly rate, and how much they charge for parts.
I was just quoted $765 for struts/springs/control arms installation, and I thought that was high. (I'll probably do it myself)