Comparatively Less Expensive
Picture windows are a simpler type of home window that is fixed in place and cannot be moved. This offers some nice advantages, the first of which is the price you can expect to pay. In general, a picture window will run 15% to 20% less than a comparable casement window.
The reason is that picture windows are simpler to build and do not have the same hardware requirements and parts such as cam locks and lift rails that movable windows do - making them less expensive to produce.