99 pages, GSL, covers. There is a quite a lot in this book. While Goodman Games could have used a lot from their previous book (The Complete Guide to Dragonkin) this one has a completely different approach. Dragonborn are well established in D&D4, so none of that material is repeated here. Instead the book covers different clans and variations of Dragonborn. There is also a lot of crunch to go with the fluff. Frankly Dragonborn need a lot more "fluff". Unlike all the other fantasy races, Dragonborn/Dragonkin are really a creation of D&D. Sure there have been other types in the past, but even in the early days of the game their origin is purely a D&D one. That gives this book a lot of room to run.
There is also a nice collection of items to help give this race a sense of history. Plenty of powers for Dragonborn characters, options and magic items. If you are like my son and love to play Dragonborn in 4e then this is a great book to have.