If you're going to quilt for hire, then charge appropriately. Check into the going rate in your area. In my area, any basic edge-to-edge, meandering, or panto is $.02 (two cents) per square inch, if it's a medium or dense pattern then it's $.03/sq in. Custom quilting starts at $.04/inch and goes up from there, depending on how dense and complicated it is. Most longarmers prefer to use specific threads, so there's usually a thread charge per bobbin, $1.75 for regular and $2.75 for variegated or specialty. There are extra charges for: if the top or back needs excessive pressing, non-standard prep work such as fixing/mending seamwork, odd edges, sewing or piecing the backing, using multiple thread colors, etc. They can bring their own batting or if you prefer to quilt with a specific batting, let them know.