True it's a long wait, but B&B#28 was so ridiculously under valued it was due for a correction anyways. I mean the prices you could have bought a half-decent middle-grade copy for just a few short years ago, in hindsight were insanely low. I wish I had bought a few, but I'm not really a speculator when it comes down to it.
I don't see a huge slide back in price. I think it'll settle down a bit and maybe stabilize somewhere just below current highs for a while. I do suggest you get a copy in the next year or so. But do it before the JLA movie premieres, thats for darned sure.