Tony, this is an indispensable set. I'm sure you can find it used; I found mine for around the same price as Vibes, around $175. It hasn't changed a bit since I bought it.
The music? Well, I love so much of it. There's the set with Stan Getz and Elvin Jones! Some cool in between song chatter on that session. A set with a symphony orchestra that has a vibe about it that I really dig. There are lots of live sets, with numerous unreleased tracks from the live sets with Chuck Israels and Larry Bunker or Philly Joe Jones in California, from 65 and 67 respectively, I think. I like the Trio '64 and '65 albums and you also get both of the overdubbing experiments: Conversations With Myself & More Conversations. The Montreaux set from '68 previously mentioned is a classic set, where they had the audience in the palm of their hands. Also a few rare albums, probably only available on imports. Bill Evans Trio at Town Hall, with the wonderful solo medley subtitled "In Memory Of His Father". Oh, also the album with Jeremy Steig. It's 18 discs, but a really great set. The booklet is great too. Several different points of view offered. One of my favorites.
But then, Bill Evans is one of my favories; everything he played was always beautiful. The sound...
Wow vibes: your set has quite a bit of rust. Does it come off on your hands? Mine sure doesn't. Dry as a bone...