As someone who has been collecting for almost 40 years, I've paid more that what they are asking for the DVD set for single episodes of rare shows. This is a relative bargain.
Too funny. Lets say just for argument's sake that you were recording TV shows when this show originally aired in 1975. You had some money and you figured that this was a show you would want to save for posterity and maybe thought would never air again. Available to you was Betamax one hour tape...