Jake Spurlock

add_filter("manage_edit-the_store_columns", "prod_edit_columns");
add_action("manage_posts_custom_column",  "prod_custom_columns");

function prod_edit_columns($columns){
        $columns = array(
            "cb" => "<input type=\"checkbox\" />",
            "title" => "Product Title",
            "description" => "Description",
            "price" => "Price",
            "catalog" => "Catalog",
            "display" => "Display",
        );

        return $columns;
}

function prod_custom_columns($column){
        global $post;
        switch ($column)
        {
            case "description":
                the_excerpt();
                break;
            case "price":
                $custom = get_post_custom();
                echo $custom["thestore_price"][0];
                break;
            case "catalog":
                echo wp_tag_cloud( array( 'taxonomy' => 'Product Tags', format => 'flat' ) );
                break;
            case "display":
                $custom_display = get_post_custom();
                echo $custom_display["thestore_display"][0];
                break;
        }
}