Custompress sidebar widget based on

I am looking for a way to place a widget in the sidebar that lists results of custom fields.

My custom press is filled with pieces of art at a gallery.
Each piece is a custom post.
On each post, a custom field is "Price Range".
There are 7 options (price ranges).
It is a radio button in the editor.

I would like to have a sidebar widget that displays the 7 options as links. When a site visitor clicks on one of the links (price range), I would like the resulting page to display all of the posts (pieces of art) within that price range.

I hope I'm explaining this properly. Thanks for all of your help, as always!

-- Scott