How Do I make an Ajax Enabled Filter widget

Hi There
I'm curious if MarketPress has AJAX ability in terms of filtering products by tags/categories or other attributes?

A good example would be the sidebar featured on where you can filter by price. And the product list updates via ajax.

WooCommerce offers this functionality - should I just add this as a feature request? Can you point me in the right direction of how I coudl develop this myself?