I had a pair of these Superfeet given to me several years ago. Best extra foot support I've ever found. Just bought my second pair so I don't have to keep switching them form one pair of shoes to the next so often.
Still using my first pair after several years of use. But admittedly, they are starting to break down. Maybe I can get another 1-2 years of use out of them since they no longer get full time use.
My podiatrist put me Superfeet (green) over a year ago and they worked very well in all my shoes, slowly but steadily restoring my arches. When I needed new ones I did a Nextag search for the best price and Tree Fort Bikes had the best deal around. Even with shipping the cost was less than any other discount I could find.