I do custom cover design for publication. I do have premades available for sale on my website as well. Please check out the site to see all of my examples and my pricing menu. I'll put the link to my site in this inline comment >

All publication-quality covers are made with images that are 300dpi and images were purchased from a stock site. I can do full book wraps, Kindle (ebook) covers, and Kindle Vella covers. 

All works done for publication are under the 'professional works' tab on the website.

If you have any questions please feel free to PM me. I'm happy to answer any questions you may have concerning publicatiion.

Premade Book wraps (or book jackets)

Premade Vella Covers