I bought my Hinterberg frame off of CL a few months ago. The Lady had it set up and showed us how to take it apart. She also had very detailed instructions on how to assemble it. The cat and I had it set up in about an hour or so.
My machine (Bailey Home Quilter 15 pro) is due here next Tuesday. I have about 2200 to 2300 dollars invested in it all total.