I can help you out. First tell me why you need 4 bottles? is it required for one car or many.
It is comes in concentrate, you have dilute it 50% water before using it. Normally a 1300 cc car requires 6 litres of coolant. Which means you need 2 bottles of 1.5 litres concentrate coolant.
How much price did they quote you?
My number is 0321-2059427
I can ship it you from lahore to karachi via Daewoo Cargo