How much does it cost to change my Disc brake Calipers and Rotors in Singapore? Front and Back.?

I am looking for a place to change my disc brake caliper and rotor for both front and back in Singapore. I want to know the cost. Will it cost a lot? I am refering to a bicycle.How much does it cost to change my Disc brake Calipers and Rotors in Singapore? Front and Back.?It costs A LOT more. Waite till you're back home