Should be around RM180 for the sensor.. installation labor RM30+-.. Highly recommend to get Mitsubishi original part or Proton ori part as crank sensor is a very important component, if it fails while u are driving ur engine will die off instantly and fail to restart depending on the severity of the faulty sensor.

You can drop by here, search this address on GMaps. 17, Jalan PJS 11/8, Bandar Sunway, 46150 Petaling Jaya, Selangor
Bawah pokok workshop, but reliable and does a good job at reasonable price. Forgot whats the shop name, but its one of the 2 workshops there.

Thanks. Planning to go tomorrow.