Are you looking for knee length, or thigh high? Platform, stiletto, flat, low heel?
What size are you (and in male or female sizes)?
My all-time favorite is Skyscraper Heels in Chicago (and yes, you can order from afar). However, their specialty (obviously) is 4 to 6 inch stiletto heels. There used to be a store here in Eugene called Delphina, and I think they're now online (something like realcoolclothes). Maybe hot topic....