If you have a car and are travelling into the city-centre of Amsterdam (public transport central zone), you can park close to the motorway for a fraction of the price of parking in the centre of the city.
http://www.iamsterdam.com/en/visiting/plan-your-trip/getting-around/parking/park-and-ride
These are the eye-watering city-centre rates: http://www.amsterdam.info/parking/
