Which of these is worth to buy?

So my local HMV store has these anime on blu ray for offer.

*Afro Samurai Director's Cut

*Afro Samurai Complete Murder Sessions

*Attack on Titan Complete Series

*Space Dandy Season 1 Collectors Edition

*Summer Wars

*The Girl Who Lept Through Time

*Bayonetta: Bloody Fate

*Appleseed Alpha

*Eden of the East

*Blue Excorist The Movie

*Blood-C

*Steins;Gate Complete Series

*Robotics;Notes Part 1

*Aesthetica of a Rogue Hero Complete Series

*Accel World Part 1

None of them have I ever seen

How would you rank these alone in terms of quality and rewatch value?

Which of these is worth to buy?