[Perfectlap]

well you can have the oil changed and brakes flushed(which is a yearly thing). And do the air filters yourself.
Ask for the quick inspection (couple of hours instead of all day), the ppi which people get prior to buying a p car.
That should be about half the cost they quoted and will give you a little more piece of mind.
The Boxster is not a maintenance heavy car as many think and the dealer wishes it was.