ECommerce plugin

Hi

I don’t have too much needs from it, mostly, categories/groups, items with images and a price to create a “add to cart” button that will send the user to paypal to actually make the payment.

I read about wp Ecommerce but the comments are really controversial and it doesn’t seem to support 3.1.2.

Can anyone here recommend me of a simple (preferably freeware but not a must) ecommerce plugin?

Thanks