hi, i have 1 question to ask. i own a waja cps. when i drive 130km/h++. is it normal if the steering shaking?

by the way, if i want to change my absorber. front. how much do you think they will charge me? my car will be 2 years (in june 2011). millage 26k. seldom use this car.

and, how do they charge me for alignment and balancing the tyre? sorry, im noob here. 1st time own a car and i only know send my car for 5k service. the rest im not that sure.