Some non quilters have no idea of the value of the fabric and the added value of the love and time and thought a quilter puts into a quilt. Keep the communication open with your DIL and son. If you feel comfortable saying something - say something to the fact that a quilt this size in Lancaster PA (per someone on the QB) has a price tag of $775, but that with each stitch you added love, and good wishes, and happy thoughts for their marriage - a one of a kind gift for a one of a kind couple.