Belt is $60. Pump is $80. Labor to replace belt is 5.4 hours, and to replace pump can't be more than an additional .5 I would guess.
These are only estimated prices but just add up parts prices, your area's (dealer's) hourly labor rate, sales tax and perhaps a few incidentals like new coolant or a new hose or two, and you should have it.
In California, if I do the math, this job seems to run something like $750??