I bought the complete UD series some 5 years ago and the money that I paid was well worth it. I will not buy the 40th Anniversary series because the extras the set offers can be seen on You Tube. If you have never bought the complete set,and have never seen UD, I suggest that you invest the money for this great piece of television history. You will not regret it. British drama is the best there is. The writers and production values are magnificent. I can understand why this program crosses all cultural lines.