First we have to choose quantity of soft drink which was used to party or family members, for example we choose 200ml of soft drink it cost 12 rs and the 1.25L cost 55rs, 1.75L cost 75rs and 2.25L is 80, they decrease the cost when was the quantity increase, they fix the rate to the bottle also so the small coke is cost and quantity less perhaps the the big quantity is less price so we have to choose the drink first we select the quantity and the last thing please check the expiry date and buy the drink