I just spotted an new bridal shop doing celebration sale on facebook,
the Ala-carte rental are SGD 1000 for wedding dress & SGD 600 for evening dress, rental package (1 wedding & 1 evening dress ) is SGD 1480. Is it attractive? Also they offer 40% discount for the purchase of single item. As I didn't compare the Ala-carte price with other shops but this one seems reasonable to me.