If there had a zero, I would have given "0" rating to fiverr. It is such a website where buyers enjoy absolute freedom. If they please, they can pay you. If they don't, you have to provide them with quality work for free. Although, Fiverr takes charges from you, it is always in the side of your client. Clients can threaten you for giving a negative feedback and get more works from you for free at the end. If you complain to FIverr, they will refund the money to the clients without any verification and justification of your claim. I have lost at least $200 in total with my three works on fiverr.
Doing high budget work on fiverr is very risky. You may or may not get your money at the end of the work. Just work on FIverr and mail me at *******@gmail.com, if I am wrong.