There is a set of all five books from the Folio Society (adds The Silmarillion) on ABE right now for $225. I'm not sure how much you would spend over the length of the membership agreement but if you just wanted the Tolkein books that might be the way to go rather than join. They recently did an edition of DRACULA that I wanted but bought on eBay rather than joining.
http://www.abebooks.com/servlet/Book...%3D83%26y%3D15