Hi SelSel, sorry I haven't logged on to this thread cos' only managed to pop into the dressmaker's shop last night.
I am wearing a traditional sari for my solemnisation. That can fetch anything from $100 for the more beady/embroidered ones. Mine's a gift from my fiance's mom as an engagement gift so I went to a dressmaker (Queen's Tailoring) and told her to make me the blouse, a piece of fabric will be cut from the sari to make the blouse (usually the plain one). You can tell her what kind of necklines and sleeves, if at all, you want for the blouse. My blouse only cost me S$40.00 to be made.
If you are referring to the choli gaghra, the skirt and the fitting blouse, then that is rather expensive. When I went around asking, the less ornate ones (but still beautiful if you ask me) is from S$170.00. StyleMart has beautiful ones but they are expensive!
The suits for the men are from S$200.00. I hope that helps. Go to the shops along Selegie Road (the ones around StyleMart) and you'll get a feel of the clothes).