time belt changes? on 1996 Lexus LS400

How often is this repair done(recommend mileage)? What is the manufacturers recommended time to change? An with all the other recommended repair that should be done at the same time as the timing belt what is the total est cost then?

Asked by for the 1996 Lexus LS400
Replace the timing belt every 90,000 Miles. They recommend that you replace the water pump, front engine seals, drive belt, idlers, and tensioners along with the timing belt.