This is an excellent example of using abstract images to draw people into a CD cover. Granted, the effectiveness of this strategy is difficult to assess--if the single tanks, do you blame the artwork? If the single sells well, do you put it down to the artist or to the marketing?
In this case, Kristin Hersh was embarking on a solo career in the early 2000s and this single from 4AD used three acoustic b-sides and some fuzzy imagery to move the idea into people's heads that she was on her own and that this was entirely her own affair. I would call that honesty in marketing and even though you probably couldn't find this in your local shop, you can get it online and it's part of the artist's history. That makes it a worthwhile endeavor, no matter what.