I've had good luck with RAC as Buyer (Score 1)

I've had three good experiences with RAC. Two have been small Ruby on Rails projects which were not to complicated, but far above scaffolding and one WordPress template. In all of the cases the work product was not quite final. But due to the low ball prices I asked and received, I felt it was fair for me to finalize it myself rather than drag the developers through rounds of revisions. I've felt fine using on personal projects which I'd rather have done than sitting in the working on folder for months. That being said, I don't know if I would rely on it for a business critical project. Instead I see it as ideal for hobbyist type projects.

Also not mentioned is http://odesk.com/ this is a site more geared towards hiring people by the hour, rather than project, there most average hourly wages are over $15.