TIMING BELT
There should be a sticker indicating the mileage and date when the Timing Belt was done(mine have one). If serviced by Toyota, they will usually recommend the water pump and the estimate $ is usually a package.
Since many 4th gens are above 100k now, Its good to have a sticky about when, where and how much they pay for it as it is a costly maint...imagine I was qouted $1,200 by firestone for Tbelt and H2O pump and someone here paid $1,500.
SR5 2003 V8
T-Belt/H20 Pump serviced : 92,600 mi
BY : Elk Grove(CA) Toyota/Scion
Paid: $700 out d door including tax