I guess I don't know what kind of frame you are talking about. I have a homemade frame with rails that roll the quilt on it. I've quilted two quilts on it ... one queen and one full. I'm working on a king sized quilt now that I'm hoping will fit on the rails. Do you have a picture of what you're looking for?
I bought my quilt frame at an auction a couple of years ago. I think I paid $40 for it. It has been well worth it.