I had my '03 Civic EX timing belt job done 9/17/10. I pulled the slip and the total was $526.71 add 6% tax and the total was $558.31. I had a good independent shop do the job in NE PA which shouldn't be a lot different labor rates than Buffalo.
I supplied coolant (1 gallon that I bought from Honda, manual trans fluid, and power steering fluid also Honda brand) which adds another $30 or so. The labor was $272.60 for the timing belt water pump job, trans drain and fill, valve adjustment, power steering drain and refill, and tire rotation.
The parts were provided by the shop and likely came via NAPA.
Water pump- 83.98; timing belt- 30.68; valve cover gasket- 40.78; 2 drive belts @ 27.27 and 25.80, oil-lube-filter 24.90.
The car ran great before the service and just as good after. I should have had them replace the radiator hoses, as they just went bad this week.
Your shop quote for parts seems ok as they are including coolant. The labor is high as I had several additional services done and labor was still $130 less.
I'd say your quote is about $100 high and it is the labor charge that is the reason.