Those covers are not much better than placeholders. They look cheap and home made. Ugh.
I refer to this as the "Indie Tax", in that self-publishers are expected (okay, urged) to produce amaaaaaaazing covers, but have you seen the cover for "You Know You Want This"? I can, and have, done better with PowerPoint. But they're not paying me the big bucks.
Look at that picture. It says tunnel. In a very specific way. A very specific tunnel. It's super obvious and yet also clever! There are multiple meanings. It makes me think of Alice in Wonderland.
Yes, the cover could have been done in any vector program, but the idea of the cover is what they pay the designers for. I'm sure there were a dozen concepts and pitches.
For me, the visuals were very striking, and had the intended effect. It drew my eye on Audible (thanks to being heavily featured), then I recognized the title of a story I'd heard went viral (though haven't read), recognized Aubrey Plaza's name as one of the narrators, and bought it without further consideration.
But I am their target market. Though I'm a writer, I'm more of a casual reader, and I read women's fiction and sometimes literary, mostly stand-alones. I like short stories. I am not price sensitive, because I value my time more than a few bucks, and I read for pleasure at a rate of maybe 5000 words a day, mostly audio in the car.
So that's a case study of a book finding its way to the ideal reader.
FWIW, I loved the first story. I'm on Cat Person right now and it's so upsetting I had to keep pausing it. LOL. I can see why the story went viral. It's the kind of uncomfortable read that the "for-comfort-only" readers would never want to read, but that appeals to people who enjoy a challenging (as in challenging how you feel about things and people and life, as opposed to big words) read.
There are two kinds of readers. The ones who want to read about good people trying to do good things with good outcomes, and the ones who will read about sh*tty people being sh*tty. It's funny that I will read about sh*tty people, because I don't tolerate them in real life, but I guess that's fiction for ya. I don't read about serial killers, so there's a limited range of sh*ttiness I read about. *
*ETA: There are probably serial killers in this collection that I haven't encountered yet. LOL.