Penguin is the most cheapskate publisher
Penguin is using a large image of their logo in black and white as a cover. There isn't even the name of the book or the author on this generic image. So if you have a reader that uses thumbnails of the cover, you are going to be screwed if you have multiple Penguin books with the same exact generic cover.
You can't get much more cheapskate then not even making a cover with the title and author.