Molas vary greatly in quality, and the pricing to buyers varies accordingly. A greater number of layers is generally a sign of higher quality; two-layer molas are common, but examples with four or more layers will demand a better price. The quality of stitching is also a factor, with the stitching on the best molas being close to invisible. Although some molas rely on embroidery to some degree to enhance the design, those which are made using only the pure reverse-appliqué technique (or nearly so) are considered better.