The Carrefour at Suntec (Tower 3 & 4) is having its wine fair again. I was passing by Carrefour today when I saw the banners and displays of wine bottles.
One could always find various good bargains at the Carrefour wine fairs. The discounts are alright (not too much actually) and one gets to choose from a wide variety of wines. When you buy above a certain amount, they will be glad to offer free delivery.