don't know anyone who has personal experience with the shop. i'm sure you are aware of the general stuff like being prepared to travel in and out of singapore for the photoshoots, gowns, etc.
My friend went for pre-wedding photo-shoot in one of the bridal shop in City Square Jb and it was like RM5000.... Both indoors and outdoors... The outdoor shoots were in Kota Tinggi.... Not too sure if they do photo-shoots in S'pore... HTH!