There are a multitude of web sites online that sell stained glass windows.  One of England's finest stained glass window sellers is Easyboo.com.  They have over 600 antique stained glass window of every imaginable style for sale.  There are Victorian, Art Deco, Art Nouveau, Traditional English Style, and so many more types, available.   All of their international shipping is insured.  They get new windows in regularly and if you are looking for a particular style or process, all you have to do is let them know, and they will be happy to help you find something that is perfect for your needs.  They have an online gallery of many different size windows, and if you don’t see what you want, you can contact them for more assistance.