Adding Member Search Filters to the Sidebar in the Member Directory

Is it possible to add some AJAX search filters to the sidebar so that you can filter member profiles by profile fields?

For example, say you have:

price
country
rating

Could you have a select box in the side bar for country, a check box for rating and a JQuery slider for price? Does anyone have any examples of this? I have search A LOT to find examples of this, but can't quite find this exact thing. Seems strange as having filters like this in the members directory would be really useful.