I had purchased the new under-empire basing kit not too long ago, as I was looking for some good cavernous growth to use on bases. This is one of the new kits GW came out with, and they are priced $5 more than the normal basing kits. I figured I would go through what you get so those interested could see.
I'll start off by saying with most of these kits from what I've seen, it is probably a good idea to split it with a friend. In this case, I had little use for the necron crystals, and extra rocks. I knew I wouldn't use everything in here, at least not any time soon, so wasn't fully expecting my money's worth from the get go.
Overall I'm happy with what I got out of it, though a little sad half of the container was filled with rocks. After looking at the rest of the kits, the snow base kit (northern waste) is probably the best value, giving you snow flock, ice crystals, rocks, and grass.
To finish it off, I had ordered some alien fungi. These are very large, and will make an interesting terrain piece. The space wolf is to give scale to these forest of fungi. Now those are some nice shrooms.