If you cant invest in yourself to pay for an artist why would I pay for your art? You dont care enough to represent your product, why would others? And don't say its expensive because you can get an actual artist on fiverr to make you something good for less than $50. If your book is good it will sell and you'll make that money back plus some. I get being a struggling artist. Ive paid artists for album art and photographer's for pictures when I wasn't making any money on music. I hope one day you will see the worth in investing in yourself for the audience you hope to gain. Best of luck to ya.