The personal license does allow you to distribute freebies:

"Allows only for non-commercial purpose. You may distribute your works in any file formats only for non-commercial purpose."

Or direct from the license: "Licensee may sell or distribute their works in any file formats only for non-commercial purpose."

(I'm not sure how you sell something non-commercially. ^_~)

If no one has yet, I was planning to ask on their forum for clarification on renders, whether freebies made with the Personal license have to restrict images made with them to non-commercial or not.