I've attempted to use Fiverr several times but to be honest the graphic design quality is shocking. The SEO services I've bought have been good. But seriously, if you want a decent logo or graphic design, pay a local person to do it, pay someone with some understanding of marketing and communication.
My biggest irk with Fiverr, is the sellers badging me for a good review when their products have been s**t. I've been generous with some of my reviews and yet I still get emails asking for 5 stars. If it's not worth five stars, I'm not giving it five stars.