I enjoy http://www.religiousmall.com/ (Although some of their other items are questionable). I also found http://greekorthodoxicons.net to be great.
P.S. This site as some of the most wonderful Icons I have ever seen http://www.russian-icon.com/cgi-bin/gallery/imageFolio.cgi?direct=Icon_Edition_1 but they are far out of my price range.
P.S. This site as some of the most wonderful Icons I have ever seen http://www.russian-icon.com/cgi-bin/gallery/imageFolio.cgi?direct=Icon_Edition_1 but they are far out of my price range.
