I have the 50th anniversery Return of the King, it was well-worth the money
Not the others? Why would you only get the final part of the book?

Also, for some reason, your post shows more text for me while quoted than it did on the forums... Weird new forum skin.
http://www.google.nl/imgres?q=lord+of+the+rings+50th+anniversary+edition&um=1&hl=nl&client=firefox-a&sa=N&rls=org.mozilla:nl:official&biw=1760&bih=848&tbm=isch&tbnid=tbh3x1MtaVn5CM:&imgrefurl=http://www.tolkienlibrary.com/reviews/harpercollins2005.htm&docid=OHKDlNLLDkBmbM&imgurl=http://www.tolkienlibrary.com/reviews/images/lotr-HC-DL-05b.jpg&w=312&h=470&ei=GJz1Tu_LHIOr-Qa7rJzAAQ&zoom=1&iact=hc&vpx=482&vpy=116&dur=3512&hovh=276&hovw=183&tx=108&ty=136&sig=117533339869377613027&page=1&tbnh=150&tbnw=110&start=0&ndsp=37&ved=1t:429,r:2,s:0
Concerning the new weird forum skin, I can't seem to find the 'preview post' button any more, so I have no idea if this link is going to work.
Edit: Turns out it does, in a way.. But that was not quite what I intended.