I'll throw a wrench in the figures here. For a rag quilt, no batting and simply made of 36 blocks of fabric I can't see anyone paying $200.00 for it. Rag quilts are very simple, sew an X across the squares, then sew them all together, clip and call it finished. Price would be more based on how much your materials cost. I would say 2.5 times what your fabric cost would be a more than fair price.

A pieced and quilted traditional quilt would bring a higher price.