The juiciest of them being the 9-disc set with all six movies, or you can purchase either the prequel trilogy or the original trilogy separately.
The 9-disc set will include over 30 hours of special features, including never-before-seen deleted scenes, alternate takes, a look into the Star Wars archive, and more. It’s already up for pre-order on Amazon, and you’ll need to shell out $140 for the 9-disc set, or $70 for each trilogy. Expect these sets to arrive on September this year.