E-Commerce Plugin or Theme with product filtering

Hi,

I was wondering if there are any open source or even commercial WordPress themes or plugins that would allow me to add products with attributes which could then be filtered like on eBay or Amazon.com for example.

So if I added a bunch of televisions for instance, users could select 32″ and 36″ from ‘Screen Size’ and 1080p from ‘Resolution’ using a left sidebar in which case all 32″ and 36″ 1080p televisions would display on screen.

Thanks,

Andrew