I got my dress form a friend. It was used. I paid $30 for it and the veil together. I put about $25-35 into satin roses, pearls, and sequins for the dress and also bought a new headpiece for the veil (she'd used a comb, and I detatched the veil and put it on a clip instead). So, all in all, about $50-60.
My pastor's wife made my bouquet at a gift to me. I made the bridesmaids bouquets. They were probably about $5 each, because I got most of the flowers on clearance. We put about another $50 into flowers for decorations and corsages, bouteneires (however you spell it) and other things.
Pictures--A friend took my bridal portraits. So, all I had to pay for was the film and developing. That was about $40. Then we had DH's friend's wife take our wedding pictures. The developing of the film was about $50, although I don't remember how much we actually paid for the film, or if that's something she bought for herself.
Our cake was $75. A friend of ours recommeded a lady to do it for us. She first told us $100. The one I wanted was very simple, and after I showed it to her, she changed her mind and said $75.