Comment 12 for bug 788158

But according the Software Center desktop app there are applications such as SpaceChem, World of Goo, Clockwork Man, Braid, etc available in Oneiric. For starters there is not a "buy" or "install" button on the line as with other applications, however when you click "More info" there is a "buy" button and the "buy" sends you to pay.ubuntu.com but this then fails with a blank screen for me and a 404 for others.

So they do exist, but not really.