I know both designers and customers alike who are thrilled over the existence of uber-discounted design sites like Fiverr. Customers are excited because the implication is they don't have to make a big investment in their logo or branding design. It's really a no-pressure situation. They can post their requirements and (fingers crossed) for a $5 fee, they get a "custom" logo. If they don't like the logo, they're only out $5. Or, in the case of one of my clients, $50 (when 10 different attempts at getting a custom logo failed). However, if you keep your expectations extremely low, then there's a chance you'll be happy with the outcome.