I charge $1.50 per foot for binding. I sew binding to the front and hand stitch to the back. Curved edges are more. Depending on the size of the quilt, have customer bring me uncut fabric for their binding and I cut, sew and press to fit the quilt. I one time had someone bring me a binding she has made that was all bias and many small pieces sewn together. They were stretched and did not want to lay flat, when I called her about the problem she said, steam into submission. I do not like to do shoddy work so request flat fabric now and everyone I have done quilts for seem ok with that. I also do machine binding as some people just don't like binding!!!