vual g.

UPDATE:
After my first attempt at a getting a book cover done ended in disaster and missing a distribution deadline due to the Fiverr Seller's inability to understand simple English instructions, I got a refund for the full amount.
But that terrible experience costs sales for a book we were doing for Christmas distribution.
After a 24 hour delivery was promised it took 10 days to end up with very poor quality work that was rejected and I got the refund. That's not what I wanted.
2nd Attempt with Fiverr.
After a rocky start, the 2nd Fiverr Seller was much better but I have to wonder why people who seem to have no basic design sense are graphic designers. Simple things need to be spelled out in the extreme. Things like u don't need a huge publisher's logo in the bottom back cover corner. You shouldn't put the author's name right on the very edge of the cover.
After several revisions the 2nd attempt did end up working out. However, it was December 28 by then and many lost Christmas sales.
I was so amazed and grateful the 2nd Fiverr Seller managed to complete the job, I actually gave them a bit more money.
But it's not the money that's the issue. It's the lack of quality control.
Anybody with a computer can join Seller and claim to have a skill.
WARNING: Fiverr does not pre-check work of the Sellers. They rely solely on customer reviews so if you can get on a few different machines and get some friends to give you 5 Star reviews, you look like an expert. It's fraudulent and irresponsible behavior on Fiverr's part but all they are interested in is their 5%. Their policies are entirely about them, not the customer. So I would say try it if you must but don't spend much and don't expect much. In fact, if it's a design project, may as well get Adobe InDesign and learn to use it yourself. It's what I plan to do.
Overall Fiverr is about making money for Fiverr and has no interest in the quality of work done by its Sellers. With Fiverr you are totally on your own. But if it doesn't work out, threaten legal action and you'll get your refund sent quickly.