This artbook looks to be what I was hoping the digital artbook that you got with the coupon code with the game was. That thing was very disappointing, with most of the art already seen, and it took forever to get to the people with codes. Some of the videos were pretty bad ass, though, and I did enjoy it for what it was.
And that price is pretty damn good. I'm used to about $50 a book, so $27 on sale at amazon right now works for me. Absolutely picking that one up.
On the topic of 3d versus 2d content of it, I get more inspired by 2d art, than 3d, personally. I end up wanting to make a 2d character into 3d, and have a lot of fun doing it. Seeing the 3d stuff will be nice, but that's stuff I deal with everyday, so I'd much rather look at 2d