He used to be a professional book cover designer but he is now retired and does book cover design for fun. (thebookdesigner.com)
For $ 5 - 50, you can have your ebook and / or print book cover designed for you. (sherrysnider.com)
You might want to have a look at the monthly ebook cover design awards posts, where every designer is credited and you can find people whose work appeals to you. (thebookdesigner.com)