I have seen guys around town who have big ol chest freezers in back of their pickup and signs saying they are sellign steaks, ect.
Would I buy from them, probably not. I don't know that much about them and I don't even buy from some of the markets around here because I don't like the way they do their meat. I prefer to drive out to Emmons Meat Market for certain cuts, or cut Safeway who still has actual people working in the meat dept. cutting meat and wrapping.