for 500 bucks you get:
Oil and filter change
Transmission fluid flush
Coolant flush
PCV valve replacement
Engine Air filter replacement
Wiper replacement
Tire balance and rotation
Fill washer fluid
Full car inspection
Reset maintenance light
Lubrication of all door joints
Reminder sticker of your next service (usually within 5,000 miles)
and last but not least a car wash!
I may be missing 1 or 2 things but that is basically what they do
this applies to 30,000 60,000 90,000 120,000 and so forth (every 30,000) at every 60,000 mile service they are required to replace your transmission pan gasket (autos only).
Every 15,000 45,000 75,000 etc
they do:
Oil and filter change
Engine air filter
Wiper replacement
Tire balance and rotation
Lubrication of all door joints
Full car inspection.
Reset maintenance light
Reminder sticker of your next service (usually within 5,000 miles)
Car wash
All this information can be found in your owners manual including other helpful facts
Hope this has helped