What I need from a shop’s website

I visit websites of real-life shops from time to time. They can be handy and they can be annoying. When I found this Oatmeal comic (that referred to this excellent xkcd diagram) I was reminded about an old sketch I had lying around.

Shop websites tend to look like this

UPDATE: I’m sorry, shop websites do of course look like this

In 99% of cases what I need is this