At one time (years ago I confess) Sandy and Caroline made an offer that if anyone wanted to purchase the entire catalog, for a set price (which I do not recall), they would have the whole set AND any new releases from that point for life. At the time I was penniless (well, too near so to matter) and since then I have bought about 2/3 one by one, but it is an intriguing idea, not to mention a bold statement about their faith in their product.