MV Covers* is run by an artist who is stepping back from the world of premade book covers (where the author picks out a pre-created design, explains what text needs to go on it, and pays for the result) to focus on logo work. Due to this, she is listing all her remaining premades at $15 a piece (which is EXTREMELY inexpensive for the quality of work she does) and is willing to make fairly major changes for a fee. I found a cover that I liked (for Loving A Deathseer, Book 3 in the Jaiya Series), but the woman was showing a bit more cleavage than I felt comfortable with, and I wanted her eyes to be more visible. The final pricetag for having that done and the fonts changed to more or less match what you see on the ebook cover to Marrying A Monster, was $30.
*Note: like many book cover sites, may be NSFW depending on your office’s guidelines.