I have this set and I have to agree with lennyr, if you like the movies go for it. "A Fist Full of Dollars" and "For a Few Dollars More" are not anamorphic and have no extras other than trailers and a booklet. "The Good, the Bad, and the Ugly" is anamorphic. It also includes 14 minutes of footage never-before-seen in the U.S., trivia and production notes and is in dual layer format so the entire film is on one side. All three are DD mono with no enhancements, it would probably take away from the films in my opinion.
Coincidentally, I went to BB to pick up a copy of the latest Harry Potter film today and they had "The Good the Bad and the Ugly" playing on their display. It looked pretty good on most of the large projection sets. If memory serves, this film was grainy per the director's desires so I wouldn't expect a crystal clear picture regardless of the transfer.