60K service also includes:
Coolant change, differential gear lube change, throttle body clean, minor ATF fluid change (pan drain of 2+ quarts), oil chnge, torque bolts to spec, PCV valve, inspect belts, air filter, cabin filter, etc..
Per Lexus, spark plugs are changed at 90K.
Cost is $550 for dealer, $400 for import shop - KC, MO area prices....