There are a variety of prices you can charge especially depending on your area. people are not breaking down the doors to by quilts when there are so many cheaper hand quilted quilts coming in from China. Granted we quilters can see the cheap fabrics and the crummy stitch but the non quilter's won't notice those features. I would talk with the store owner and see if she can give you any advice. Keep track of your time spent and the money on fabrics and threads. I am lucky if I can just get out what it cost in fabrics. Good Luck.