It would seem as though the new JigoShop 1.1 Price Widget is broken, but the more worrying thing is only on some installations. I currently use WP 3.3.1, Jigoshop 1.1 and the latest version of twenty ten theme.
Both nozzle sliders remain at 0. Passing the max_price and min_price variables do not work also. I have subsequently removed this widget from use but as it is a great feature, this is rather unfortunate. Any ideas as to what may be causing this?