REALLY simple shopingcart

Hi!
Im looking for a really simple shoppingcart solution. The simpler the better. What I want is a plugin that puts a shoppingcart in a post an when the cart is clicked, the atricle (posttitle) shows up inte the sidebar together with a button to proceed with the purchase by adding name, adress and phonenumber. And then a email with the info should be sent.

No payment alternatives is needed.

Anyone has any suggestions?