I normally charge $20.00 and hour for my time plus whatever the quilting cost is to have the quilt quilted. I usually have the customer by the fabric because they know what they are looking for and have them supply the backing and batting. That way they have a sense of what is involved in the quilt to that point, if they are insitant on me doing the quilt after I give them a rough estimate of what it is going to cost. I'm with Carolyn, I would have them pick enough to do a lap quilt and then if there is a couple they can't make there mind up on then use them in the back.

Good luck.