In the early 1980's we used to live in a small town in Florida that had exactly that kind of store but the inventory was mill ends from some of the great bedding factories along the East Coast. I was not a quilter at that time, and much of the fabric would not have been suitable for quilts, but it was a fantastic opportunity to get designer fabric for various decorating uses. I'm quite sure the store closed a long time ago because the mills moved to China. So the source of this type of inventory might be pretty difficult to track down, if not impossible. The large fabric stores sell their own bolt ends at a discount, and since that's one of the items that keeps some customers coming into the store, I doubt they'd be willing to off-load their extras on a competitor.