I ran into a guy who was selling flatbows for ~$60 at the Minnesota Ren Fest. If I can find his contact info I'll edit this post to include it. They were a little rough and unfinished, but cheap. He had 'em branded as "elven bows".
Edit: It is called Bows of the Risen Son, and it is based out of Missouri. (451) 453-3166 is the number, and their email is
bowsoftherisenson@gmail.com They have a webpage, but it is just an "under construction" placeholder. They seem to hit a decent number of ren faires.