What is the cost of the maintenace once my car reaches 30,000 miles? on 2010 Porsche 911 Turbo

My car is coming close to the 30,000 miles and the maintenance required to maintain the car how much would it cost for the 30,000 mile maintenance an exact amount or at least a ball park figure.

Asked by for the 2010 Porsche 911 Turbo
it will vary approx 400.00