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I have the first-press edition of Single Collection Vol. 2 (Many major thanks to Pips_Paradise!)

What's included is this:

(Link if the picture doesn't work)
(Sorry about the quality of the picture, my iPhone doesn't take amazing pictures!)

In the picture is the cardboard slipcase, two CDs (Disc 1 and Disc 2), the lyric booklet, a Kuma-chang charm (in the white envelope). The white sheet of paper was an initial idea, which was originally supposed to be a "lottery ticket" of sorts. You entered your code into the website listed and you got a chance at winning one of 1000 tickets to the show. The idea was later scrapped, and instead the code gave you special permission to enter a website dedicated to the Wild Life concerts.
Also included is a bonus DVD (at the top of the picture in the jewel case) which contains the Goodbye Happiness PV.

I think, however, you only got the bonus DVD if you pre-ordered the album. Don't hold me to that as I don't rightly remember. The lottery-ticket thing was included in all first-press editions.
The standard edition of the album comes in a jewel case like any other CD.

It's a lovely set and I love owning it, and again major props to Pips_Paradise for getting me it!
Hope this helped you!