The third volume is the best yet. Once again, it's a beautiful hardcover volume with high quality paper and several color pages. It retells the part of the story where Ramba Ral chases White Base. The story and art is still great.
Also I thought the first two volumes had some disappointing extra material but this one is way better because it has a special comic and colored artwork at the end as well as an interview by Kio Shimoku, creator of Genshiken.
So yeah, Gundam fans, buy this thing. For the love of god, buy this thing. Buy all of them.