Most LAer charge per square inch. Multiply your length times your width to get your square inches. They usually start a little over a penny per s/i depending of course on your area but you can also ship out if you find the prices in your area to high but then you have to figure shipping both to and from on top so you would most likely not realize any savings.
So say your quilt is 60 x 80. That is 4,800 square inches. At .015 per s/i that comes to $72.00