What is a reasonable amount of time and cost to replace an intake manifold gasket and an EGR valve on a 1999 Mercury Mountaineer 6-cylinder OHC?

It should take 1.5 hours to do the intake, assuming a rate of $99 an hour for labor plus parts it should be around $200. It should take one half hour for the EGR valve but the part is expensive so around $300 total for that.