Car's first service with us

Recently we bought a used car. 2006 model white Hyundai Getz done 15k kms in good condition. Last week I took the car to the service center for the first time. It was for a general sevice - its official term is Periodic Maintainance Service (PMS). In addition I opted for wheel balancing and full interior upgradation along with under chassis protection from 3M. All together costed me 9k bucks. But going forth I think the PMS is going to cost me 3k bucks every 6 months for the periodic routine.