you damn sure will be paying more than 150 at a dealership.but thats usual price for people doing sidejobs if you buy the parts, if i remember right 90k is reccomended change for timing belt and water pump, while you are changing that you should change the crank seal, cam seals and cam end seal as well since its all right there, and if you havent already go ahead and get new valve cover gasket set and tube seals. if you dont know what your doing, dont do it cause youll never get the timing right and if you put the retaining rings on backwards or forget anything or dont tension the belt right your gonna fuck yourself. but if you are gonna do it, take your time, and pay attention. should only take 2 hours max if you dont run into any trouble like water pump bolts breaking.