It is not that I look for a 'pleasing ' cover . I look for an "Interesting" cover, that is relevant to the genre I read (and the STORY).
Wrong for the book, is ..just Wrong!
(And Cheaply/sloppily done is just hurting the book in many cases. A few Writers here at MR, get opinions on covers they do (to save $), so they are not glaringly 'cheap'

)
My bigger Nit is covers that violate the story. eg. A main character who does not use weapons, shown with a big honk'n ray gun.
A first time buyer may not know, but someone who follows the series, WILL