I have to agree with everyone. The cost of any quilt should reflect the tremendous time you are going to put into its construction. Picking materials is easy compared to pieceing it together to make something good looking. You need to talk more about how she wants it bound, show her yor quilting designs. My base price for a full quilt is 250.00 plus materials. The quilting designing, is extra and I charge for my time and threads. You use a lot of thread. Think about what you went through in your other projects, and be confident, you are worth a good price for your work.