Ariel Frailich's I Saw That! shop is not a typical magic shop. You won't find silks, thumb tips, or sponge balls there. What you will find is a really nice (though limited) selection of books and ebooks, most of which are created by Mr. Frailich. He does have a couple of good ones by other authors.

The limited selection isn't a drawback for me. There are several items you can't get anywhere else. I own his Sub Rosa booklet and it's brilliant.

This is definitely a shop to keep on your radar.