Hancock Blu-ray SteelBook Question

[Kory]

Hey guys, I'm curious about the "Hancock" Blu-ray SteelBook. I've read that there is a 1-disc and a 2-disc version of this.

First of all, what is the difference between the two versions, content-wise?

Second, is there any difference in the SteelBook itself or just the Blu-ray content?

Third, how do I tell the difference between them?

Fourth, which one is rarer and what would a fair price (shipped) be for each?

Fifth, is the ratings logo on the front a sticker?

Any help (the sooner, the better) would be appreciated.

Thanks!