how much should i expect to be charged for replacing water pump on 1993 nissan sentra 1.6. labor only

the hardest part on a water pump job is removing and putting back the belt. other than that all u gotta do is remove the mount on the passenger side jack up the engine a little bit and theres the 4 10mm bolts for the pulley and the 5 or 6 10mm bolts on the pump. and the rest is putting it back. i wouldnt pay anymore than 150.

But what about the bolts that attach the thermostat housing to the the pump?