Tried it, only get the Omnibus that I don't need.
Amazon? It's fairly expensive, though...
Barnes and Noble if you have one near you is where you can get that volume and other graphic novels. Detective Comics has been good actually. Where did you leave off?
Tried there, half the time people there either don't know what I'm talking about or bring me to the New 52. Even online. Might just have it ordered from the Source or Mind's Eye.