As you would possibly expect, it is a fundamental part of the publishing course of action: a book can't be published if it doesn't have a book cover. Probably far more importantly, it frequently is not going to manage to attract audience if it doesn't have a good book cover. https://whitemagicstudios.co.uk/blog/why-should-you-create-a-storefront-account-when-amazon-self-publishing-uk/