The $600 I paid sounds like a bargain compared to having to sew them up myself. I priced the glides alone and they totaled nearly $75!! Then fabric, blackout liner, pressing them to get the perfect folds and creases!
They come ready to hang, all the glides and snaps in place. Not hard to put on but you need to have all your faculties, they can get put on the wrong windows or be put on in the wrong order.