Actually wasn't planning on getting Origins right away, but with deals, I ended up getting Arkham Asylum GOTY, Arkham City GOTY, Origins, and Blackgate for about $80 total. Already played through the first two games but never did play the DLC for Arkham City.
I thought the first two games were solid 8s and not anywhere near the "Metroidvania" style games people likened them to, but they were fun. Not expecting Origins to be better than the Rocksteady games, but hopefully it will be on par. Blackgate I've read is short and easy, but still fun. It's getting mostly trashed in reviews right now. Pretty much what I expected.