I purchased an Ubuntu User magazine in the Ubuntu Software Center. It shows as "Installed on 2014-08-25". And the button on the right gives me a chance to [Remove]. But I haven't been able to locate the file, if a file was downloaded. Alternatively, I don't know where I should download the file from.
I did a search in Unity and the magazine shows up in the Applications area. I expected it to be somewhere under my home directory, but it is placed in: