I aggree many BOM are quilts that have a lot of fabric you need in small amounts, some quilts you can end up spending more if you don't have a lot of scraps for applique, say uou need a 4x4 square of only one fabric, you will not find a place that will cut just that size for you and . I ended up buying a ton of fat quarters for an applique quilt for small pieces because I don't have a lot of scraps., so for appliques quilts with intricate piecing I would certainly do a BOM