Hi can somebody help me to calculate the total amount that i need to pay for PosDaftar? i'm confused want to send parcel from kl to sarawak.

i'm planning to send a parcel to my friend, and according to pos malaysia rates, my parcel = 3kg so i need to pay RM13.50..am i right so far? and does it include another fee for the domestic label which is RM1.70? and i also want to insure my parcel as well..which is around RM20.  the total will be RM35.20.
what about the tax or what ever surcharges that they are going to charge? i'm very confuse...

i can't go and ask the ppl from pos laju office as i'm in o'sea now. planning to go back for holiday for few weeks soon. therefore i need some guidance from  anyone from here.