Replaced mine a week ago on my 2001 v6.
Middle of the line rebuilt 130 amp @ Autozone was $150 + $35 core. Bought new tensioner pully too. I already put a new Gates belt on 1 month ago. Took me 3 hours total (ok im slow).

OEM parts are more expensive & dealers charge the highest hourly rate + they charge for 'shop supplies' too.