You should have checked the prices in different places.
Here, it very easy to get ripped off, no matter what you change at your car.....I went to a service park for an oil change, and they charged me 130 euros for everything....than I searched a bit more, and found a place where, if you buy the oil from them, the change is included , so the overall payment was about 70 euros....almost HALF!!!!
Thats why, you first need to search a good place, ask friends for cheapper mechanics....or do it yourself