It depends on the size of the window and the design. Generally, it would cost anywhere from $100 to $1000 to restore a stained glass window.
It depends on the size of the window and the complexity of the design. A typical price range would be $50-100 per hour. Window restoration is a specialized field, so you'll want to find a qualified professional to do the work. In order to get an accurate estimate, they will need to visit your home and take a look at the window in question.