Alternators aren’t easy on Camrys after a certain model year in the 2000s. Used to be you could loosen the two bolts holding it, do the tensioner, slip the drive belt off, and undo the 14mm and 12mm bolts the rest of the way and wiggle the alternator out under a radiator hose.

Unfortunately on your later year Camry the radiator has to come out to get the alternator out. So your labor costs include the time a radiator replacement would take.